99920874 has 32 divisors (see below), whose sum is σ = 206968320. Its totient is φ = 32126400.

The previous prime is 99920827. The next prime is 99920893. The reversal of 99920874 is 47802999.

It is a happy number.

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 in 15 ways as a sum of consecutive naturals, for example, 71664 + ... + 73044.

It is an arithmetic number, because the mean of its divisors is an integer number (6467760).

Almost surely, 2^99920874 is an apocalyptic number.

99920874 is an abundant number, since it is smaller than the sum of its proper divisors (107047446).

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

99920874 is a wasteful number, since it uses less digits than its factorization.

99920874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 99920874 is about 9996.0429170747. The cubic root of 99920874 is about 464.0364276048.

The spelling of 99920874 in words is "ninety-nine million, nine hundred twenty thousand, eight hundred seventy-four".