393051942 has 12 divisors (see below), whose sum is σ = 851612580. Its totient is φ = 131017308.

The previous prime is 393051937. The next prime is 393051973. The reversal of 393051942 is 249150393.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 393051897 and 393051906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10918092 + ... + 10918127.

It is an arithmetic number, because the mean of its divisors is an integer number (70967715).

Almost surely, 2^393051942 is an apocalyptic number.

393051942 is an abundant number, since it is smaller than the sum of its proper divisors (458560638).

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

393051942 is a wasteful number, since it uses less digits than its factorization.

393051942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21836227 (or 21836224 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 393051942 is about 19825.5376219663. The cubic root of 393051942 is about 732.5152132955.

The spelling of 393051942 in words is "three hundred ninety-three million, fifty-one thousand, nine hundred forty-two".