399286634842 has 8 divisors (see below), whose sum is σ = 612858555936. Its totient is φ = 195000449532.

The previous prime is 399286634809. The next prime is 399286634863. The reversal of 399286634842 is 248436682993.

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

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, 2321433838 + ... + 2321434009.

It is an arithmetic number, because the mean of its divisors is an integer number (76607319492).

Almost surely, 2^399286634842 is an apocalyptic number.

399286634842 is a deficient number, since it is larger than the sum of its proper divisors (213571921094).

399286634842 is a wasteful number, since it uses less digits than its factorization.

399286634842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4642867892.

The product of its digits is 107495424, while the sum is 64.

The spelling of 399286634842 in words is "three hundred ninety-nine billion, two hundred eighty-six million, six hundred thirty-four thousand, eight hundred forty-two".