393831948 has 24 divisors (see below), whose sum is σ = 950629680. Its totient is φ = 126750400.

The previous prime is 393831917. The next prime is 393831973. The reversal of 393831948 is 849138393.

It is a junction number, because it is equal to n+sod(n) for n = 393831897 and 393831906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565503 + ... + 566198.

It is an arithmetic number, because the mean of its divisors is an integer number (39609570).

Almost surely, 2^393831948 is an apocalyptic number.

It is an amenable number.

393831948 is an abundant number, since it is smaller than the sum of its proper divisors (556797732).

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

393831948 is a wasteful number, since it uses less digits than its factorization.

393831948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131737 (or 1131735 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 393831948 is about 19845.1996210671. The cubic root of 393831948 is about 732.9994484652. Note that the first 3 decimals are identical.

The spelling of 393831948 in words is "three hundred ninety-three million, eight hundred thirty-one thousand, nine hundred forty-eight".