394355968 has 18 divisors (see below), whose sum is σ = 787171994. Its totient is φ = 197177856.

The previous prime is 394355959. The next prime is 394356013. The reversal of 394355968 is 869553493.

It can be written as a sum of positive squares in only one way, i.e., 389193984 + 5161984 = 19728^2 + 2272^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769971 + ... + 770482.

Almost surely, 2^394355968 is an apocalyptic number.

It is an amenable number.

394355968 is a deficient number, since it is larger than the sum of its proper divisors (392816026).

394355968 is an equidigital number, since it uses as much as digits as its factorization.

394355968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540469 (or 1540455 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 52.

The square root of 394355968 is about 19858.3979212826. The cubic root of 394355968 is about 733.3244061356.

The spelling of 394355968 in words is "three hundred ninety-four million, three hundred fifty-five thousand, nine hundred sixty-eight".