84909384 has 80 divisors (see below), whose sum is σ = 271814400. Its totient is φ = 24258528.

The previous prime is 84909379. The next prime is 84909427. The reversal of 84909384 is 48390948.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4824 + ... + 13895.

It is an arithmetic number, because the mean of its divisors is an integer number (3397680).

Almost surely, 2^84909384 is an apocalyptic number.

84909384 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

84909384 is an abundant number, since it is smaller than the sum of its proper divisors (186905016).

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

84909384 is a wasteful number, since it uses less digits than its factorization.

84909384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18744 (or 18731 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 84909384 is about 9214.6288042438. The cubic root of 84909384 is about 439.5266673006.

The spelling of 84909384 in words is "eighty-four million, nine hundred nine thousand, three hundred eighty-four".