39135979404 has 18 divisors (see below), whose sum is σ = 98927059140. Its totient is φ = 13045326456.

The previous prime is 39135979397. The next prime is 39135979409. The reversal of 39135979404 is 40497953193.

It is a happy number.

39135979404 is a `hidden beast` number, since 3 + 9 + 1 + 3 + 597 + 9 + 40 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (39135979409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 543555234 + ... + 543555305.

It is an arithmetic number, because the mean of its divisors is an integer number (5495947730).

Almost surely, 2^39135979404 is an apocalyptic number.

It is an amenable number.

39135979404 is an abundant number, since it is smaller than the sum of its proper divisors (59791079736).

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

39135979404 is a wasteful number, since it uses less digits than its factorization.

39135979404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087110549 (or 1087110544 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The spelling of 39135979404 in words is "thirty-nine billion, one hundred thirty-five million, nine hundred seventy-nine thousand, four hundred four".