393134830 has 16 divisors (see below), whose sum is σ = 771974064. Its totient is φ = 142958080.

The previous prime is 393134783. The next prime is 393134831. The reversal of 393134830 is 38431393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393134831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1786867 + ... + 1787086.

It is an arithmetic number, because the mean of its divisors is an integer number (48248379).

Almost surely, 2^393134830 is an apocalyptic number.

393134830 is a deficient number, since it is larger than the sum of its proper divisors (378839234).

393134830 is a wasteful number, since it uses less digits than its factorization.

393134830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3573971.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 393134830 is about 19827.6279468826. The cubic root of 393134830 is about 732.5667013619.

The spelling of 393134830 in words is "three hundred ninety-three million, one hundred thirty-four thousand, eight hundred thirty".