394715516828 has 6 divisors (see below), whose sum is σ = 690752154456. Its totient is φ = 197357758412.

The previous prime is 394715516827. The next prime is 394715516831. The reversal of 394715516828 is 828615517493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394715516827) by changing a digit.

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 as a sum of consecutive naturals, namely, 49339439600 + ... + 49339439607.

It is an arithmetic number, because the mean of its divisors is an integer number (115125359076).

Almost surely, 2^394715516828 is an apocalyptic number.

It is an amenable number.

394715516828 is a deficient number, since it is larger than the sum of its proper divisors (296036637628).

394715516828 is a wasteful number, since it uses less digits than its factorization.

394715516828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98678879211 (or 98678879209 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 59.

The spelling of 394715516828 in words is "three hundred ninety-four billion, seven hundred fifteen million, five hundred sixteen thousand, eight hundred twenty-eight".