639004113 has 32 divisors (see below), whose sum is σ = 1046916480. Its totient is φ = 381957120.

The previous prime is 639004111. The next prime is 639004117. The reversal of 639004113 is 311400936.

639004113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 639004113 - 2¹ = 639004111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (639004111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6945 + ... + 36417.

It is an arithmetic number, because the mean of its divisors is an integer number (32716140).

Almost surely, 2^639004113 is an apocalyptic number.

It is an amenable number.

639004113 is a deficient number, since it is larger than the sum of its proper divisors (407912367).

639004113 is a wasteful number, since it uses less digits than its factorization.

639004113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29566 (or 29560 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 639004113 is about 25278.5306732808. The cubic root of 639004113 is about 861.3266494808.

The spelling of 639004113 in words is "six hundred thirty-nine million, four thousand, one hundred thirteen".