394657956 has 243 divisors, whose sum is σ = 1305925803. Its totient is φ = 100124640.

The previous prime is 394657937. The next prime is 394657969. The reversal of 394657956 is 659756493.

The square root of 394657956 is 19866.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 9178071 + ... + 9178113.

Almost surely, 2^394657956 is an apocalyptic number.

394657956 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

394657956 is the 19866-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394657956

394657956 is an abundant number, since it is smaller than the sum of its proper divisors (911267847).

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

394657956 is a wasteful number, since it uses less digits than its factorization.

394657956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 66 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 54.

The cubic root of 394657956 is about 733.5115455768.

The spelling of 394657956 in words is "three hundred ninety-four million, six hundred fifty-seven thousand, nine hundred fifty-six".