393146942 has 4 divisors (see below), whose sum is σ = 589720416. Its totient is φ = 196573470.

The previous prime is 393146927. The next prime is 393146953. The reversal of 393146942 is 249641393.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 393146942.

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 as a sum of consecutive naturals, namely, 98286734 + ... + 98286737.

It is an arithmetic number, because the mean of its divisors is an integer number (147430104).

Almost surely, 2^393146942 is an apocalyptic number.

393146942 is a deficient number, since it is larger than the sum of its proper divisors (196573474).

393146942 is a wasteful number, since it uses less digits than its factorization.

393146942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196573473.

The product of its digits is 139968, while the sum is 41.

The square root of 393146942 is about 19827.9333769306. The cubic root of 393146942 is about 732.5742244440.

The spelling of 393146942 in words is "three hundred ninety-three million, one hundred forty-six thousand, nine hundred forty-two".