87398912 has 20 divisors (see below), whose sum is σ = 174628146. Its totient is φ = 43699200.

The previous prime is 87398911. The next prime is 87398923. The reversal of 87398912 is 21989378.

It can be written as a sum of positive squares in only one way, i.e., 54405376 + 32993536 = 7376^2 + 5744^2 .

It is not an unprimeable number, because it can be changed into a prime (87398911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84839 + ... + 85862.

Almost surely, 2^87398912 is an apocalyptic number.

It is an amenable number.

87398912 is a deficient number, since it is larger than the sum of its proper divisors (87229234).

87398912 is an equidigital number, since it uses as much as digits as its factorization.

87398912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170719 (or 170703 counting only the distinct ones).

The product of its digits is 217728, while the sum is 47.

The square root of 87398912 is about 9348.7385245283. The cubic root of 87398912 is about 443.7809703439.

The spelling of 87398912 in words is "eighty-seven million, three hundred ninety-eight thousand, nine hundred twelve".