399570805838 has 8 divisors (see below), whose sum is σ = 599381741640. Its totient is φ = 199776891960.

The previous prime is 399570805783. The next prime is 399570805883. The reversal of 399570805838 is 838508075993.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4196633 + ... + 4290788.

It is an arithmetic number, because the mean of its divisors is an integer number (74922717705).

Almost surely, 2^399570805838 is an apocalyptic number.

399570805838 is a deficient number, since it is larger than the sum of its proper divisors (199810935802).

399570805838 is a wasteful number, since it uses less digits than its factorization.

399570805838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8510962.

The product of its (nonzero) digits is 65318400, while the sum is 65.

The spelling of 399570805838 in words is "three hundred ninety-nine billion, five hundred seventy million, eight hundred five thousand, eight hundred thirty-eight".