393384930 has 64 divisors (see below), whose sum is σ = 1052300160. Its totient is φ = 93533184.

The previous prime is 393384923. The next prime is 393384997. The reversal of 393384930 is 39483393.

It is a super-2 number, since 2×393384930² = 309503406302209800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10609 + ... + 29988.

It is an arithmetic number, because the mean of its divisors is an integer number (16442190).

Almost surely, 2^393384930 is an apocalyptic number.

393384930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

393384930 is an abundant number, since it is smaller than the sum of its proper divisors (658915230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

393384930 is a wasteful number, since it uses less digits than its factorization.

393384930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40643.

The product of its (nonzero) digits is 209952, while the sum is 42.

The square root of 393384930 is about 19833.9338004340. The cubic root of 393384930 is about 732.7220137212.

The spelling of 393384930 in words is "three hundred ninety-three million, three hundred eighty-four thousand, nine hundred thirty".