394402956 has 24 divisors (see below), whose sum is σ = 949960704. Its totient is φ = 127226640.

The previous prime is 394402951. The next prime is 394402961. The reversal of 394402956 is 659204493.

It is an interprime number because it is at equal distance from previous prime (394402951) and next prime (394402961).

It is not an unprimeable number, because it can be changed into a prime (394402951) 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, 529740 + ... + 530483.

It is an arithmetic number, because the mean of its divisors is an integer number (39581696).

Almost surely, 2^394402956 is an apocalyptic number.

It is an amenable number.

394402956 is an abundant number, since it is smaller than the sum of its proper divisors (555557748).

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

394402956 is a wasteful number, since it uses less digits than its factorization.

394402956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060261 (or 1060259 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 394402956 is about 19859.5809623466. The cubic root of 394402956 is about 733.3535304814.

The spelling of 394402956 in words is "three hundred ninety-four million, four hundred two thousand, nine hundred fifty-six".