8987878990 has 32 divisors (see below), whose sum is σ = 16490650176. Its totient is φ = 3526260480.

The previous prime is 8987878973. The next prime is 8987879023. The reversal of 8987878990 is 998787898.

It is a Harshad number since it is a multiple of its sum of digits (73).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98119 + ... + 166141.

It is an arithmetic number, because the mean of its divisors is an integer number (515332818).

Almost surely, 2^8987878990 is an apocalyptic number.

8987878990 is a deficient number, since it is larger than the sum of its proper divisors (7502771186).

8987878990 is a wasteful number, since it uses less digits than its factorization.

8987878990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68284.

The product of its (nonzero) digits is 146313216, while the sum is 73.

The square root of 8987878990 is about 94804.4249494716. The cubic root of 8987878990 is about 2079.1495992020.

The spelling of 8987878990 in words is "eight billion, nine hundred eighty-seven million, eight hundred seventy-eight thousand, nine hundred ninety".