87931492 has 12 divisors (see below), whose sum is σ = 167869296. Its totient is φ = 39968840.

The previous prime is 87931483. The next prime is 87931549. The reversal of 87931492 is 29413978.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999178 + ... + 999265.

It is an arithmetic number, because the mean of its divisors is an integer number (13989108).

Almost surely, 2^87931492 is an apocalyptic number.

It is an amenable number.

87931492 is a deficient number, since it is larger than the sum of its proper divisors (79937804).

87931492 is a wasteful number, since it uses less digits than its factorization.

87931492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998458 (or 1998456 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 87931492 is about 9377.1793200301. The cubic root of 87931492 is about 444.6805635815.

The spelling of 87931492 in words is "eighty-seven million, nine hundred thirty-one thousand, four hundred ninety-two".