639113416 has 16 divisors (see below), whose sum is σ = 1199827440. Its totient is φ = 319159440.

The previous prime is 639113411. The next prime is 639113417. The reversal of 639113416 is 614311936.

It is a happy number.

It is a super-2 number, since 2×639113416² = 816931917022378112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (639113411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42766 + ... + 55741.

It is an arithmetic number, because the mean of its divisors is an integer number (74989215).

Almost surely, 2^639113416 is an apocalyptic number.

It is an amenable number.

639113416 is a deficient number, since it is larger than the sum of its proper divisors (560714024).

639113416 is a wasteful number, since it uses less digits than its factorization.

639113416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99324 (or 99320 counting only the distinct ones).

The product of its digits is 11664, while the sum is 34.

The square root of 639113416 is about 25280.6925538048. The cubic root of 639113416 is about 861.3757572604.

The spelling of 639113416 in words is "six hundred thirty-nine million, one hundred thirteen thousand, four hundred sixteen".