393244078340 has 12 divisors (see below), whose sum is σ = 825812564556. Its totient is φ = 157297631328.

The previous prime is 393244078327. The next prime is 393244078369. The reversal of 393244078340 is 43870442393.

It can be written as a sum of positive squares in 2 ways, for example, as 238442749636 + 154801328704 = 488306^2 + 393448^2 .

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, 9831101939 + ... + 9831101978.

It is an arithmetic number, because the mean of its divisors is an integer number (68817713713).

Almost surely, 2^393244078340 is an apocalyptic number.

It is an amenable number.

393244078340 is an abundant number, since it is smaller than the sum of its proper divisors (432568486216).

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

393244078340 is a wasteful number, since it uses less digits than its factorization.

393244078340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19662203926 (or 19662203924 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 47.

The spelling of 393244078340 in words is "three hundred ninety-three billion, two hundred forty-four million, seventy-eight thousand, three hundred forty".