394662972 has 48 divisors (see below), whose sum is σ = 1039248000. Its totient is φ = 115469760.

The previous prime is 394662913. The next prime is 394663013. The reversal of 394662972 is 279266493.

It is a super-2 number, since 2×394662972² = 311517722935745568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47722 + ... + 55377.

It is an arithmetic number, because the mean of its divisors is an integer number (21651000).

Almost surely, 2^394662972 is an apocalyptic number.

It is an amenable number.

394662972 is an abundant number, since it is smaller than the sum of its proper divisors (644585028).

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

394662972 is a wasteful number, since it uses less digits than its factorization.

394662972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103146 (or 103144 counting only the distinct ones).

The product of its digits is 979776, while the sum is 48.

The square root of 394662972 is about 19866.1262454460. The cubic root of 394662972 is about 733.5146531440.

It can be divided in two parts, 394 and 662972, that added together give a palindrome (663366).

The spelling of 394662972 in words is "three hundred ninety-four million, six hundred sixty-two thousand, nine hundred seventy-two".