99455920 has 40 divisors (see below), whose sum is σ = 232078896. Its totient is φ = 39637248.

The previous prime is 99455911. The next prime is 99455927. The reversal of 99455920 is 2955499.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (99455927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21319 + ... + 25561.

Almost surely, 2^99455920 is an apocalyptic number.

It is an amenable number.

99455920 is an abundant number, since it is smaller than the sum of its proper divisors (132622976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99455920 is a wasteful number, since it uses less digits than its factorization.

99455920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549 (or 4543 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 99455920 is about 9972.7588961130. The cubic root of 99455920 is about 463.3155534931.

The spelling of 99455920 in words is "ninety-nine million, four hundred fifty-five thousand, nine hundred twenty".