639080414 has 16 divisors (see below), whose sum is σ = 1095967968. Its totient is φ = 273791232.

The previous prime is 639080381. The next prime is 639080417. The reversal of 639080414 is 414080936.

It is a super-2 number, since 2×639080414² = 816847551116822792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (639080417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41414 + ... + 54710.

It is an arithmetic number, because the mean of its divisors is an integer number (68497998).

Almost surely, 2^639080414 is an apocalyptic number.

639080414 is a deficient number, since it is larger than the sum of its proper divisors (456887554).

639080414 is a wasteful number, since it uses less digits than its factorization.

639080414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16739.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 639080414 is about 25280.0398338294. The cubic root of 639080414 is about 861.3609306734.

The spelling of 639080414 in words is "six hundred thirty-nine million, eighty thousand, four hundred fourteen".