39904984 has 64 divisors (see below), whose sum is σ = 91445760. Its totient is φ = 15936000.

The previous prime is 39904979. The next prime is 39905003. The reversal of 39904984 is 48940993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158859 + ... + 159109.

It is an arithmetic number, because the mean of its divisors is an integer number (1428840).

Almost surely, 2^39904984 is an apocalyptic number.

39904984 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39904984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45722880).

39904984 is an abundant number, since it is smaller than the sum of its proper divisors (51540776).

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

39904984 is a wasteful number, since it uses less digits than its factorization.

39904984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 39904984 is about 6317.0391798690. The cubic root of 39904984 is about 341.7241828481.

The spelling of 39904984 in words is "thirty-nine million, nine hundred four thousand, nine hundred eighty-four".