87900808 has 8 divisors (see below), whose sum is σ = 164814030. Its totient is φ = 43950400.

The previous prime is 87900803. The next prime is 87900823. The reversal of 87900808 is 80800978.

It can be written as a sum of positive squares in only one way, i.e., 69255684 + 18645124 = 8322^2 + 4318^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (87900803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5493793 + ... + 5493808.

Almost surely, 2^87900808 is an apocalyptic number.

It is an amenable number.

87900808 is a deficient number, since it is larger than the sum of its proper divisors (76913222).

87900808 is a wasteful number, since it uses less digits than its factorization.

87900808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10987607 (or 10987603 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 87900808 is about 9375.5430776036. The cubic root of 87900808 is about 444.6288332874.

The spelling of 87900808 in words is "eighty-seven million, nine hundred thousand, eight hundred eight".