84909904 has 40 divisors (see below), whose sum is σ = 168808640. Its totient is φ = 41361408.

The previous prime is 84909901. The next prime is 84909943. The reversal of 84909904 is 40990948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84909901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110032 + ... + 110800.

It is an arithmetic number, because the mean of its divisors is an integer number (4220216).

Almost surely, 2^84909904 is an apocalyptic number.

It is an amenable number.

84909904 is a deficient number, since it is larger than the sum of its proper divisors (83898736).

84909904 is a wasteful number, since it uses less digits than its factorization.

84909904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 941 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 84909904 is about 9214.6570202043. The cubic root of 84909904 is about 439.5275645449.

The spelling of 84909904 in words is "eighty-four million, nine hundred nine thousand, nine hundred four".