87931494 has 48 divisors (see below), whose sum is σ = 225808128. Its totient is φ = 25122312.

The previous prime is 87931483. The next prime is 87931549. The reversal of 87931494 is 49413978.

It is a super-3 number, since 3×87931494³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9522 + ... + 16325.

It is an arithmetic number, because the mean of its divisors is an integer number (4704336).

Almost surely, 2^87931494 is an apocalyptic number.

87931494 is an abundant number, since it is smaller than the sum of its proper divisors (137876634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87931494 is a wasteful number, since it uses less digits than its factorization.

87931494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25871 (or 25859 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 87931494 is about 9377.1794266720. The cubic root of 87931494 is about 444.6805669529.

The spelling of 87931494 in words is "eighty-seven million, nine hundred thirty-one thousand, four hundred ninety-four".