399396291842 has 8 divisors (see below), whose sum is σ = 602231058432. Its totient is φ = 198652605700.

The previous prime is 399396291817. The next prime is 399396291863. The reversal of 399396291842 is 248192693993.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522769634 + ... + 522770397.

It is an arithmetic number, because the mean of its divisors is an integer number (75278882304).

Almost surely, 2^399396291842 is an apocalyptic number.

399396291842 is a deficient number, since it is larger than the sum of its proper divisors (202834766590).

399396291842 is a wasteful number, since it uses less digits than its factorization.

399396291842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045540224.

The product of its digits is 45349632, while the sum is 65.

It can be divided in two parts, 3993962 and 91842, that added together give a palindrome (4085804).

The spelling of 399396291842 in words is "three hundred ninety-nine billion, three hundred ninety-six million, two hundred ninety-one thousand, eight hundred forty-two".