393193023940 has 24 divisors (see below), whose sum is σ = 843273551232. Its totient is φ = 153930885600.

The previous prime is 393193023929. The next prime is 393193023943. The reversal of 393193023940 is 49320391393.

It is not an unprimeable number, because it can be changed into a prime (393193023943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209144286 + ... + 209146165.

It is an arithmetic number, because the mean of its divisors is an integer number (35136397968).

Almost surely, 2^393193023940 is an apocalyptic number.

It is an amenable number.

393193023940 is an abundant number, since it is smaller than the sum of its proper divisors (450080527292).

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

393193023940 is a wasteful number, since it uses less digits than its factorization.

393193023940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418290507 (or 418290505 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 46.

The spelling of 393193023940 in words is "three hundred ninety-three billion, one hundred ninety-three million, twenty-three thousand, nine hundred forty".