3953391979 has 4 divisors (see below), whose sum is σ = 3953561976. Its totient is φ = 3953221984.

The previous prime is 3953391977. The next prime is 3953392013. The reversal of 3953391979 is 9791933593.

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 3953391979 - 2¹ = 3953391977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3953391977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43294 + ... + 98899.

It is an arithmetic number, because the mean of its divisors is an integer number (988390494).

Almost surely, 2^3953391979 is an apocalyptic number.

3953391979 is a deficient number, since it is larger than the sum of its proper divisors (169997).

3953391979 is a wasteful number, since it uses less digits than its factorization.

3953391979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169996.

The product of its digits is 6200145, while the sum is 58.

The square root of 3953391979 is about 62876.0047951522. The cubic root of 3953391979 is about 1581.2114805846.

The spelling of 3953391979 in words is "three billion, nine hundred fifty-three million, three hundred ninety-one thousand, nine hundred seventy-nine".