99908897 has 16 divisors (see below), whose sum is σ = 115888320. Its totient is φ = 85176000.

The previous prime is 99908873. The next prime is 99908899. The reversal of 99908897 is 79880999.

It is a cyclic number.

It is not a de Polignac number, because 99908897 - 2¹⁸ = 99646753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99908899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18743 + ... + 23475.

It is an arithmetic number, because the mean of its divisors is an integer number (7243020).

Almost surely, 2^99908897 is an apocalyptic number.

It is an amenable number.

99908897 is a deficient number, since it is larger than the sum of its proper divisors (15979423).

99908897 is a wasteful number, since it uses less digits than its factorization.

99908897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4864.

The product of its (nonzero) digits is 2939328, while the sum is 59.

The square root of 99908897 is about 9995.4438120576. The cubic root of 99908897 is about 464.0178863126.

The spelling of 99908897 in words is "ninety-nine million, nine hundred eight thousand, eight hundred ninety-seven".