87994090 has 16 divisors (see below), whose sum is σ = 165276288. Its totient is φ = 33667216.

The previous prime is 87994087. The next prime is 87994133. The reversal of 87994090 is 9049978.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a self number, because there is not a number n which added to its sum of digits gives 87994090.

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 7 ways as a sum of consecutive naturals, for example, 191062 + ... + 191521.

It is an arithmetic number, because the mean of its divisors is an integer number (10329768).

Almost surely, 2^87994090 is an apocalyptic number.

87994090 is a deficient number, since it is larger than the sum of its proper divisors (77282198).

87994090 is a wasteful number, since it uses less digits than its factorization.

87994090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382613.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 87994090 is about 9380.5165102994. The cubic root of 87994090 is about 444.7860605255.

The spelling of 87994090 in words is "eighty-seven million, nine hundred ninety-four thousand, ninety".