393348042920 has 96 divisors (see below), whose sum is σ = 1029786945480. Its totient is φ = 134828305920.

The previous prime is 393348042917. The next prime is 393348042931. The reversal of 393348042920 is 29240843393.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 347111862244 + 46236180676 = 589162^2 + 215026^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8516690 + ... + 8562750.

Almost surely, 2^393348042920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 393348042920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (514893472740).

393348042920 is an abundant number, since it is smaller than the sum of its proper divisors (636438902560).

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

393348042920 is a wasteful number, since it uses less digits than its factorization.

393348042920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50443 (or 50432 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 47.

The spelling of 393348042920 in words is "three hundred ninety-three billion, three hundred forty-eight million, forty-two thousand, nine hundred twenty".