3949501172679 has 6 divisors (see below), whose sum is σ = 5704835027216. Its totient is φ = 2633000781780.

The previous prime is 3949501172671. The next prime is 3949501172741. The reversal of 3949501172679 is 9762711059493.

3949501172679 is a `hidden beast` number, since 3 + 9 + 49 + 501 + 17 + 2 + 6 + 79 = 666.

It is not a de Polignac number, because 3949501172679 - 2³ = 3949501172671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949501172671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 219416731807 + ... + 219416731824.

Almost surely, 2^{3949501172679} is an apocalyptic number.

3949501172679 is a deficient number, since it is larger than the sum of its proper divisors (1755333854537).

3949501172679 is a wasteful number, since it uses less digits than its factorization.

3949501172679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438833463637 (or 438833463634 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 63.

The spelling of 3949501172679 in words is "three trillion, nine hundred forty-nine billion, five hundred one million, one hundred seventy-two thousand, six hundred seventy-nine".