394057772 has 24 divisors (see below), whose sum is σ = 703012800. Its totient is φ = 193232016.

The previous prime is 394057757. The next prime is 394057787. The reversal of 394057772 is 277750493.

It is an interprime number because it is at equal distance from previous prime (394057757) and next prime (394057787).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41879 + ... + 50417.

It is an arithmetic number, because the mean of its divisors is an integer number (29292200).

Almost surely, 2^394057772 is an apocalyptic number.

It is an amenable number.

394057772 is a deficient number, since it is larger than the sum of its proper divisors (308955028).

394057772 is a wasteful number, since it uses less digits than its factorization.

394057772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8765 (or 8763 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 44.

The square root of 394057772 is about 19850.8884435937. Note that the first 3 decimals coincide. The cubic root of 394057772 is about 733.1395227957.

The spelling of 394057772 in words is "three hundred ninety-four million, fifty-seven thousand, seven hundred seventy-two".