394620964 has 6 divisors (see below), whose sum is σ = 690586694. Its totient is φ = 197310480.

The previous prime is 394620943. The next prime is 394620971. The reversal of 394620964 is 469026493.

It can be written as a sum of positive squares in only one way, i.e., 208571364 + 186049600 = 14442^2 + 13640^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 394620964.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49327617 + ... + 49327624.

Almost surely, 2^394620964 is an apocalyptic number.

It is an amenable number.

394620964 is a deficient number, since it is larger than the sum of its proper divisors (295965730).

394620964 is a wasteful number, since it uses less digits than its factorization.

394620964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98655245 (or 98655243 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 394620964 is about 19865.0689402277. The cubic root of 394620964 is about 733.4886270753.

The spelling of 394620964 in words is "three hundred ninety-four million, six hundred twenty thousand, nine hundred sixty-four".