399446763995 has 8 divisors (see below), whose sum is σ = 483578030016. Its totient is φ = 316729469056.

The previous prime is 399446763971. The next prime is 399446764021. The reversal of 399446763995 is 599367644993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 399446763995 - 2⁶ = 399446763931 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353492147 + ... + 353493276.

It is an arithmetic number, because the mean of its divisors is an integer number (60447253752).

Almost surely, 2^399446763995 is an apocalyptic number.

399446763995 is a deficient number, since it is larger than the sum of its proper divisors (84131266021).

399446763995 is a wasteful number, since it uses less digits than its factorization.

399446763995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706985541.

The product of its digits is 1190427840, while the sum is 74.

The spelling of 399446763995 in words is "three hundred ninety-nine billion, four hundred forty-six million, seven hundred sixty-three thousand, nine hundred ninety-five".