998001002 has 4 divisors (see below), whose sum is σ = 1497001506. Its totient is φ = 499000500.

The previous prime is 998000999. The next prime is 998001019. The reversal of 998001002 is 200100899.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 711342241 + 286658761 = 26671^2 + 16931^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 249500249 + ... + 249500252.

Almost surely, 2^998001002 is an apocalyptic number.

998001002 is a deficient number, since it is larger than the sum of its proper divisors (499000504).

998001002 is a wasteful number, since it uses less digits than its factorization.

998001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499000503.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 998001002 is about 31591.1538567365. The cubic root of 998001002 is about 999.3332228404. Note that the first 3 decimals are identical.

The spelling of 998001002 in words is "nine hundred ninety-eight million, one thousand, two".