393952464879 has 4 divisors (see below), whose sum is σ = 525269953176. Its totient is φ = 262634976584.

The previous prime is 393952464797. The next prime is 393952464881. The reversal of 393952464879 is 978464259393.

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 393952464879 - 2⁸ = 393952464623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393952464079) 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, 65658744144 + ... + 65658744149.

It is an arithmetic number, because the mean of its divisors is an integer number (131317488294).

Almost surely, 2^393952464879 is an apocalyptic number.

393952464879 is a deficient number, since it is larger than the sum of its proper divisors (131317488297).

393952464879 is a wasteful number, since it uses less digits than its factorization.

393952464879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131317488296.

The product of its digits is 352719360, while the sum is 69.

The spelling of 393952464879 in words is "three hundred ninety-three billion, nine hundred fifty-two million, four hundred sixty-four thousand, eight hundred seventy-nine".