87439460 has 12 divisors (see below), whose sum is σ = 183622908. Its totient is φ = 34975776.

The previous prime is 87439459. The next prime is 87439477. The reversal of 87439460 is 6493478.

It can be written as a sum of positive squares in 2 ways, for example, as 63075364 + 24364096 = 7942^2 + 4936^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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, 2185967 + ... + 2186006.

It is an arithmetic number, because the mean of its divisors is an integer number (15301909).

Almost surely, 2^87439460 is an apocalyptic number.

It is an amenable number.

87439460 is an abundant number, since it is smaller than the sum of its proper divisors (96183448).

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

87439460 is a wasteful number, since it uses less digits than its factorization.

87439460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4371982 (or 4371980 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 87439460 is about 9350.9069078887. The cubic root of 87439460 is about 443.8495892329.

The spelling of 87439460 in words is "eighty-seven million, four hundred thirty-nine thousand, four hundred sixty".