99904020 has 24 divisors (see below), whose sum is σ = 279731424. Its totient is φ = 26641056.

The previous prime is 99903997. The next prime is 99904037. The reversal of 99904020 is 2040999.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 832474 + ... + 832593.

It is an arithmetic number, because the mean of its divisors is an integer number (11655476).

Almost surely, 2^99904020 is an apocalyptic number.

It is an amenable number.

99904020 is an abundant number, since it is smaller than the sum of its proper divisors (179827404).

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

99904020 is a wasteful number, since it uses less digits than its factorization.

99904020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665079 (or 1665077 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 99904020 is about 9995.1998479270. The cubic root of 99904020 is about 464.0103359271.

The spelling of 99904020 in words is "ninety-nine million, nine hundred four thousand, twenty".