393442244392 has 16 divisors (see below), whose sum is σ = 737724669300. Its totient is φ = 196715665920.

The previous prime is 393442244383. The next prime is 393442244407. The reversal of 393442244392 is 293442244393.

It can be written as a sum of positive squares in 2 ways, for example, as 388635040836 + 4807203556 = 623406^2 + 69334^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367017 + ... + 959992.

Almost surely, 2^393442244392 is an apocalyptic number.

It is an amenable number.

393442244392 is a deficient number, since it is larger than the sum of its proper divisors (344282424908).

393442244392 is a wasteful number, since it uses less digits than its factorization.

393442244392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364076 (or 1364072 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 49.

Subtracting from 393442244392 its reverse (293442244393), we obtain a palindrome (99999999999).

The spelling of 393442244392 in words is "three hundred ninety-three billion, four hundred forty-two million, two hundred forty-four thousand, three hundred ninety-two".