87920984 has 8 divisors (see below), whose sum is σ = 164851860. Its totient is φ = 43960488.

The previous prime is 87920977. The next prime is 87921013. The reversal of 87920984 is 48902978.

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

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 as a sum of consecutive naturals, namely, 5495054 + ... + 5495069.

Almost surely, 2^87920984 is an apocalyptic number.

It is an amenable number.

87920984 is a deficient number, since it is larger than the sum of its proper divisors (76930876).

87920984 is a wasteful number, since it uses less digits than its factorization.

87920984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10990129 (or 10990125 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 87920984 is about 9376.6190068702. The cubic root of 87920984 is about 444.6628494520.

Adding to 87920984 its product of nonzero digits (290304), we get a palindrome (88211288).

The spelling of 87920984 in words is "eighty-seven million, nine hundred twenty thousand, nine hundred eighty-four".