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998623201 = 316012
BaseRepresentation
bin111011100001011…
…100011111100001
32120121002022111111
4323201130133201
54021121420301
6243031543321
733514104622
oct7341343741
92517068444
10998623201
11472773434
1223a52ab41
1312bb77604
14968ada49
155ca0d551
hex3b85c7e1

998623201 has 3 divisors (see below), whose sum is σ = 998654803. Its totient is φ = 998591600.

The previous prime is 998623187. The next prime is 998623211. The reversal of 998623201 is 102326899.

It is a happy number.

The square root of 998623201 is 31601.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 102326899 = 313326923.

It can be written as a sum of positive squares in only one way, i.e., 921183201 + 77440000 = 30351^2 + 8800^2 .

It is not a de Polignac number, because 998623201 - 229 = 461752289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998623211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 15801 + ... + 47401.

Almost surely, 2998623201 is an apocalyptic number.

998623201 is the 31601-st square number.

998623201 is the 15801-st centered octagonal number.

It is an amenable number.

998623201 is a deficient number, since it is larger than the sum of its proper divisors (31602).

998623201 is an frugal number, since it uses more digits than its factorization.

998623201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63202 (or 31601 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The cubic root of 998623201 is about 999.5408562193.

Multiplying 998623201 by its product of nonzero digits (46656), we get a square (46591764065856 = 68258162).

The spelling of 998623201 in words is "nine hundred ninety-eight million, six hundred twenty-three thousand, two hundred one".

Divisors: 1 31601 998623201