394036839120 has 40 divisors (see below), whose sum is σ = 1221514202016. Its totient is φ = 105076490368.

The previous prime is 394036839083. The next prime is 394036839121. The reversal of 394036839120 is 21938630493.

It is a happy number.

394036839120 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 394036839120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394036839121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 820909842 + ... + 820910321.

Almost surely, 2^394036839120 is an apocalyptic number.

394036839120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

394036839120 is an abundant number, since it is smaller than the sum of its proper divisors (827477362896).

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

394036839120 is a wasteful number, since it uses less digits than its factorization.

394036839120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641820179 (or 1641820173 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 48.

The spelling of 394036839120 in words is "three hundred ninety-four billion, thirty-six million, eight hundred thirty-nine thousand, one hundred twenty".