394994375 has 10 divisors (see below), whose sum is σ = 493585752. Its totient is φ = 315995000.

The previous prime is 394994357. The next prime is 394994399. The reversal of 394994375 is 573499493.

It is a happy number.

It is not a de Polignac number, because 394994375 - 2¹² = 394990279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 315371 + ... + 316620.

Almost surely, 2^394994375 is an apocalyptic number.

394994375 is a deficient number, since it is larger than the sum of its proper divisors (98591377).

394994375 is an frugal number, since it uses more digits than its factorization.

394994375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632011 (or 631996 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 53.

The square root of 394994375 is about 19874.4654016152. The cubic root of 394994375 is about 733.7199092435.

The spelling of 394994375 in words is "three hundred ninety-four million, nine hundred ninety-four thousand, three hundred seventy-five".