394644974 has 8 divisors (see below), whose sum is σ = 599460960. Its totient is φ = 194824656.

The previous prime is 394644961. The next prime is 394644977. The reversal of 394644974 is 479446493.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394644977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1248719 + ... + 1249034.

It is an arithmetic number, because the mean of its divisors is an integer number (74932620).

Almost surely, 2^394644974 is an apocalyptic number.

394644974 is a deficient number, since it is larger than the sum of its proper divisors (204815986).

394644974 is a wasteful number, since it uses less digits than its factorization.

394644974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497834.

The product of its digits is 2612736, while the sum is 50.

The square root of 394644974 is about 19865.6732581607. The cubic root of 394644974 is about 733.5035027040.

The spelling of 394644974 in words is "three hundred ninety-four million, six hundred forty-four thousand, nine hundred seventy-four".