3954979494995 has 4 divisors (see below), whose sum is σ = 4745975394000. Its totient is φ = 3163983595992.

The previous prime is 3954979494989. The next prime is 3954979495021. The reversal of 3954979494995 is 5994949794593.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3954979494995 - 2²⁸ = 3954711059539 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 395497949495 + ... + 395497949504.

It is an arithmetic number, because the mean of its divisors is an integer number (1186493848500).

Almost surely, 2^{3954979494995} is an apocalyptic number.

3954979494995 is a deficient number, since it is larger than the sum of its proper divisors (790995899005).

3954979494995 is an equidigital number, since it uses as much as digits as its factorization.

3954979494995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790995899004.

The product of its digits is 17856417600, while the sum is 86.

The spelling of 3954979494995 in words is "three trillion, nine hundred fifty-four billion, nine hundred seventy-nine million, four hundred ninety-four thousand, nine hundred ninety-five".