39904704 has 112 divisors (see below), whose sum is σ = 134112000. Its totient is φ = 11397888.

The previous prime is 39904703. The next prime is 39904771. The reversal of 39904704 is 40740993.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39904703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10447 + ... + 13745.

Almost surely, 2^39904704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39904704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67056000).

39904704 is an abundant number, since it is smaller than the sum of its proper divisors (94207296).

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

39904704 is a wasteful number, since it uses less digits than its factorization.

39904704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327 (or 3311 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 39904704 is about 6317.0170175487. The cubic root of 39904704 is about 341.7233835912.

The spelling of 39904704 in words is "thirty-nine million, nine hundred four thousand, seven hundred four".