99986401 has 8 divisors (see below), whose sum is σ = 105964200. Its totient is φ = 94019328.

The previous prime is 99986353. The next prime is 99986423. The reversal of 99986401 is 10468999.

It can be written as a sum of positive squares in 4 ways, for example, as 1500625 + 98485776 = 1225^2 + 9924^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99986401 - 2⁷ = 99986273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99986431) 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 7 ways as a sum of consecutive naturals, for example, 24435 + ... + 28231.

It is an arithmetic number, because the mean of its divisors is an integer number (13245525).

Almost surely, 2^99986401 is an apocalyptic number.

It is an amenable number.

99986401 is a deficient number, since it is larger than the sum of its proper divisors (5977799).

99986401 is a wasteful number, since it uses less digits than its factorization.

99986401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5363.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 99986401 is about 9999.3200268818. The cubic root of 99986401 is about 464.1378420853.

The spelling of 99986401 in words is "ninety-nine million, nine hundred eighty-six thousand, four hundred one".