39999504 has 40 divisors (see below), whose sum is σ = 109412640. Its totient is φ = 12548608.

The previous prime is 39999499. The next prime is 39999511. The reversal of 39999504 is 40599993.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23694 + ... + 25325.

It is an arithmetic number, because the mean of its divisors is an integer number (2735316).

Almost surely, 2^39999504 is an apocalyptic number.

39999504 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

39999504 is an abundant number, since it is smaller than the sum of its proper divisors (69413136).

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

39999504 is a wasteful number, since it uses less digits than its factorization.

39999504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49047 (or 49041 counting only the distinct ones).

The product of its (nonzero) digits is 393660, while the sum is 48.

The square root of 39999504 is about 6324.5161079722. The cubic root of 39999504 is about 341.9937757494.

The spelling of 39999504 in words is "thirty-nine million, nine hundred ninety-nine thousand, five hundred four".