393938749065 has 8 divisors (see below), whose sum is σ = 630301998528. Its totient is φ = 210100666160.

The previous prime is 393938749033. The next prime is 393938749067. The reversal of 393938749065 is 560947839393.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 393938749065 - 2⁵ = 393938749033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 393938748987 and 393938749005.

It is not an unprimeable number, because it can be changed into a prime (393938749067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13131291621 + ... + 13131291650.

It is an arithmetic number, because the mean of its divisors is an integer number (78787749816).

Almost surely, 2^393938749065 is an apocalyptic number.

It is an amenable number.

393938749065 is a deficient number, since it is larger than the sum of its proper divisors (236363249463).

393938749065 is a wasteful number, since it uses less digits than its factorization.

393938749065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26262583279.

The product of its (nonzero) digits is 132269760, while the sum is 66.

The spelling of 393938749065 in words is "three hundred ninety-three billion, nine hundred thirty-eight million, seven hundred forty-nine thousand, sixty-five".