399570805839 has 8 divisors (see below), whose sum is σ = 534341969200. Its totient is φ = 265590089856.

The previous prime is 399570805783. The next prime is 399570805883. The reversal of 399570805839 is 938508075993.

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

It is not a de Polignac number, because 399570805839 - 2³² = 395275838543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 399570805839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399572805839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197610664 + ... + 197612685.

It is an arithmetic number, because the mean of its divisors is an integer number (66792746150).

Almost surely, 2^399570805839 is an apocalyptic number.

399570805839 is a deficient number, since it is larger than the sum of its proper divisors (134771163361).

399570805839 is a wasteful number, since it uses less digits than its factorization.

399570805839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395223689.

The product of its (nonzero) digits is 73483200, while the sum is 66.

The spelling of 399570805839 in words is "three hundred ninety-nine billion, five hundred seventy million, eight hundred five thousand, eight hundred thirty-nine".