393969076 has 12 divisors (see below), whose sum is σ = 695547972. Its totient is φ = 195241088.

The previous prime is 393969073. The next prime is 393969083. The reversal of 393969076 is 670969393.

It can be written as a sum of positive squares in 2 ways, for example, as 21864976 + 372104100 = 4676^2 + 19290^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393969073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435355 + ... + 436258.

It is an arithmetic number, because the mean of its divisors is an integer number (57962331).

Almost surely, 2^393969076 is an apocalyptic number.

It is an amenable number.

393969076 is a deficient number, since it is larger than the sum of its proper divisors (301578896).

393969076 is a wasteful number, since it uses less digits than its factorization.

393969076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871730 (or 871728 counting only the distinct ones).

The product of its (nonzero) digits is 1653372, while the sum is 52.

The square root of 393969076 is about 19848.6542616874. The cubic root of 393969076 is about 733.0845127379.

The spelling of 393969076 in words is "three hundred ninety-three million, nine hundred sixty-nine thousand, seventy-six".