87404490900 has 54 divisors (see below), whose sum is σ = 273964523742. Its totient is φ = 23307864000.

The previous prime is 87404490881. The next prime is 87404490991. The reversal of 87404490900 is 909440478.

87404490900 is a `hidden beast` number, since 8 + 74 + 0 + 4 + 490 + 90 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 7873722756 + 79530768144 = 88734^2 + 282012^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent 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 17 ways as a sum of consecutive naturals, for example, 48557151 + ... + 48558950.

Almost surely, 2^87404490900 is an apocalyptic number.

It is an amenable number.

87404490900 is an abundant number, since it is smaller than the sum of its proper divisors (186560032842).

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

87404490900 is a wasteful number, since it uses less digits than its factorization.

87404490900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97116121 (or 97116111 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 87404490900 in words is "eighty-seven billion, four hundred four million, four hundred ninety thousand, nine hundred".