394327913472 has 352 divisors, whose sum is σ = 1241209094400. Its totient is φ = 123668103168.

The previous prime is 394327913431. The next prime is 394327913503. The reversal of 394327913472 is 274319723493.

394327913472 is a `hidden beast` number, since 3 + 9 + 432 + 7 + 9 + 134 + 72 = 666.

It is a super-2 number, since 2×394327913472² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135833173 + ... + 135836075.

It is an arithmetic number, because the mean of its divisors is an integer number (3526162200).

Almost surely, 2^394327913472 is an apocalyptic number.

394327913472 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394327913472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (620604547200).

394327913472 is an abundant number, since it is smaller than the sum of its proper divisors (846881180928).

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

394327913472 is an equidigital number, since it uses as much as digits as its factorization.

394327913472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983 (or 2925 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 54.

The spelling of 394327913472 in words is "three hundred ninety-four billion, three hundred twenty-seven million, nine hundred thirteen thousand, four hundred seventy-two".