3907139640 has 32 divisors (see below), whose sum is σ = 11721419280. Its totient is φ = 1041903872.

The previous prime is 3907139623. The next prime is 3907139669. The reversal of 3907139640 is 469317093.

It is a junction number, because it is equal to n+sod(n) for n = 3907139592 and 3907139601.

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, 16279629 + ... + 16279868.

Almost surely, 2^3907139640 is an apocalyptic number.

3907139640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3907139640 is an abundant number, since it is smaller than the sum of its proper divisors (7814279640).

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

3907139640 is a wasteful number, since it uses less digits than its factorization.

3907139640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32559511 (or 32559507 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 3907139640 is about 62507.1167148190. The cubic root of 3907139640 is about 1575.0208634173.

The spelling of 3907139640 in words is "three billion, nine hundred seven million, one hundred thirty-nine thousand, six hundred forty".