3890639604 has 24 divisors (see below), whose sum is σ = 9079231840. Its totient is φ = 1296726624.

The previous prime is 3890639563. The next prime is 3890639657. The reversal of 3890639604 is 4069360983.

It is a congruent number.

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, 138582 + ... + 164274.

Almost surely, 2^3890639604 is an apocalyptic number.

It is an amenable number.

3890639604 is an abundant number, since it is smaller than the sum of its proper divisors (5188592236).

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

3890639604 is a wasteful number, since it uses less digits than its factorization.

3890639604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38319 (or 38317 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 48.

The square root of 3890639604 is about 62374.9918156307. The cubic root of 3890639604 is about 1572.8006057925.

The spelling of 3890639604 in words is "three billion, eight hundred ninety million, six hundred thirty-nine thousand, six hundred four".