399246838794 has 48 divisors (see below), whose sum is σ = 876985304832. Its totient is φ = 131244162624.

The previous prime is 399246838789. The next prime is 399246838799. The reversal of 399246838794 is 497838642993.

399246838794 is a `hidden beast` number, since 3 + 9 + 92 + 468 + 3 + 8 + 79 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (399246838789) and next prime (399246838799).

It is not an unprimeable number, because it can be changed into a prime (399246838799) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21996487 + ... + 22014629.

It is an arithmetic number, because the mean of its divisors is an integer number (18270527184).

Almost surely, 2^399246838794 is an apocalyptic number.

399246838794 is an abundant number, since it is smaller than the sum of its proper divisors (477738466038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399246838794 is a wasteful number, since it uses less digits than its factorization.

399246838794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34971 (or 34968 counting only the distinct ones).

The product of its digits is 564350976, while the sum is 72.

The spelling of 399246838794 in words is "three hundred ninety-nine billion, two hundred forty-six million, eight hundred thirty-eight thousand, seven hundred ninety-four".