99624990 has 16 divisors (see below), whose sum is σ = 239100048. Its totient is φ = 26566656.

The previous prime is 99624929. The next prime is 99624997. The reversal of 99624990 is 9942699.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99624997) 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, 1660387 + ... + 1660446.

It is an arithmetic number, because the mean of its divisors is an integer number (14943753).

Almost surely, 2^99624990 is an apocalyptic number.

99624990 is an abundant number, since it is smaller than the sum of its proper divisors (139475058).

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

99624990 is a wasteful number, since it uses less digits than its factorization.

99624990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320843.

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 99624990 is about 9981.2318878984. The cubic root of 99624990 is about 463.5779424833.

It can be divided in two parts, 996 and 24990, that multiplied together give a triangular number (24890040 = T₇₀₅₅).

The spelling of 99624990 in words is "ninety-nine million, six hundred twenty-four thousand, nine hundred ninety".