3949905955635 has 96 divisors (see below), whose sum is σ = 7416693123840. Its totient is φ = 1937416126464.

The previous prime is 3949905955607. The next prime is 3949905955649. The reversal of 3949905955635 is 5365595099493.

3949905955635 is a `hidden beast` number, since 3 + 9 + 4 + 9 + 9 + 0 + 59 + 5 + 563 + 5 = 666.

It is not a de Polignac number, because 3949905955635 - 2¹² = 3949905951539 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5525299 + ... + 6199091.

It is an arithmetic number, because the mean of its divisors is an integer number (77257220040).

Almost surely, 2^{3949905955635} is an apocalyptic number.

3949905955635 is a deficient number, since it is larger than the sum of its proper divisors (3466787168205).

3949905955635 is a wasteful number, since it uses less digits than its factorization.

3949905955635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673997 (or 673994 counting only the distinct ones).

The product of its (nonzero) digits is 885735000, while the sum is 72.

The spelling of 3949905955635 in words is "three trillion, nine hundred forty-nine billion, nine hundred five million, nine hundred fifty-five thousand, six hundred thirty-five".