399714348679 has 4 divisors (see below), whose sum is σ = 405189887776. Its totient is φ = 394238809584.

The previous prime is 399714348647. The next prime is 399714348731. The reversal of 399714348679 is 976843417993.

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 399714348679 - 2⁵ = 399714348647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399714348179) 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, 2737769439 + ... + 2737769584.

It is an arithmetic number, because the mean of its divisors is an integer number (101297471944).

Almost surely, 2^399714348679 is an apocalyptic number.

399714348679 is a deficient number, since it is larger than the sum of its proper divisors (5475539097).

399714348679 is an equidigital number, since it uses as much as digits as its factorization.

399714348679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5475539096.

The product of its digits is 246903552, while the sum is 70.

The spelling of 399714348679 in words is "three hundred ninety-nine billion, seven hundred fourteen million, three hundred forty-eight thousand, six hundred seventy-nine".