394993516 has 12 divisors (see below), whose sum is σ = 692157088. Its totient is φ = 197234352.

The previous prime is 394993507. The next prime is 394993517. The reversal of 394993516 is 615399493.

It is a self number, because there is not a number n which added to its sum of digits gives 394993516.

It is not an unprimeable number, because it can be changed into a prime (394993517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62196 + ... + 68251.

Almost surely, 2^394993516 is an apocalyptic number.

It is an amenable number.

394993516 is a deficient number, since it is larger than the sum of its proper divisors (297163572).

394993516 is a wasteful number, since it uses less digits than its factorization.

394993516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131208 (or 131206 counting only the distinct ones).

The product of its digits is 787320, while the sum is 49.

The square root of 394993516 is about 19874.4437909593. The cubic root of 394993516 is about 733.7193773660.

The spelling of 394993516 in words is "three hundred ninety-four million, nine hundred ninety-three thousand, five hundred sixteen".