87309384 has 16 divisors (see below), whose sum is σ = 218273520. Its totient is φ = 29103120.

The previous prime is 87309379. The next prime is 87309419. The reversal of 87309384 is 48390378.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1818922 + ... + 1818969.

It is an arithmetic number, because the mean of its divisors is an integer number (13642095).

Almost surely, 2^87309384 is an apocalyptic number.

It is an amenable number.

87309384 is an abundant number, since it is smaller than the sum of its proper divisors (130964136).

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

87309384 is a wasteful number, since it uses less digits than its factorization.

87309384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637900 (or 3637896 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 87309384 is about 9343.9490580803. The cubic root of 87309384 is about 443.6293879967.

The spelling of 87309384 in words is "eighty-seven million, three hundred nine thousand, three hundred eighty-four".