393345481944 has 32 divisors (see below), whose sum is σ = 986000091120. Its totient is φ = 130763642496.

The previous prime is 393345481943. The next prime is 393345482009. The reversal of 393345481944 is 449184543393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393345481943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21960747 + ... + 21978650.

Almost surely, 2^393345481944 is an apocalyptic number.

It is an amenable number.

393345481944 is an abundant number, since it is smaller than the sum of its proper divisors (592654609176).

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

393345481944 is a wasteful number, since it uses less digits than its factorization.

393345481944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43939779 (or 43939775 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 57.

The spelling of 393345481944 in words is "three hundred ninety-three billion, three hundred forty-five million, four hundred eighty-one thousand, nine hundred forty-four".