99637905 has 16 divisors (see below), whose sum is σ = 160093440. Its totient is φ = 52915968.

The previous prime is 99637891. The next prime is 99637943. The reversal of 99637905 is 50973699.

It is a happy number.

It is not a de Polignac number, because 99637905 - 2⁹ = 99637393 is a prime.

It is a super-2 number, since 2×99637905² = 19855424225578050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10312 + ... + 17481.

It is an arithmetic number, because the mean of its divisors is an integer number (10005840).

Almost surely, 2^99637905 is an apocalyptic number.

It is an amenable number.

99637905 is a deficient number, since it is larger than the sum of its proper divisors (60455535).

99637905 is a wasteful number, since it uses less digits than its factorization.

99637905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28040.

The product of its (nonzero) digits is 459270, while the sum is 48.

The square root of 99637905 is about 9981.8788311620. The cubic root of 99637905 is about 463.5979737708.

The spelling of 99637905 in words is "ninety-nine million, six hundred thirty-seven thousand, nine hundred five".