394905712 has 10 divisors (see below), whose sum is σ = 765129848. Its totient is φ = 197452848.

The previous prime is 394905661. The next prime is 394905713. The reversal of 394905712 is 217509493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394905713) by changing a digit.

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 as a sum of consecutive naturals, namely, 12340788 + ... + 12340819.

Almost surely, 2^394905712 is an apocalyptic number.

It is an amenable number.

394905712 is a deficient number, since it is larger than the sum of its proper divisors (370224136).

394905712 is a wasteful number, since it uses less digits than its factorization.

394905712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24681615 (or 24681609 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 394905712 is about 19872.2347007074. The cubic root of 394905712 is about 733.6650066251.

The spelling of 394905712 in words is "three hundred ninety-four million, nine hundred five thousand, seven hundred twelve".