3957364393 has 4 divisors (see below), whose sum is σ = 3958058500. Its totient is φ = 3956670288.

The previous prime is 3957364379. The next prime is 3957364469. The reversal of 3957364393 is 3934637593.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 411400089 + 3545964304 = 20283^2 + 59548^2 .

It is a cyclic number.

It is not a de Polignac number, because 3957364393 - 2⁹ = 3957363881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3957364393.

It is not an unprimeable number, because it can be changed into a prime (3957364373) 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 3 ways as a sum of consecutive naturals, for example, 338430 + ... + 349927.

It is an arithmetic number, because the mean of its divisors is an integer number (989514625).

Almost surely, 2^3957364393 is an apocalyptic number.

It is an amenable number.

3957364393 is a deficient number, since it is larger than the sum of its proper divisors (694107).

3957364393 is an equidigital number, since it uses as much as digits as its factorization.

3957364393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694106.

The product of its digits is 5511240, while the sum is 52.

The square root of 3957364393 is about 62907.5861323577. The cubic root of 3957364393 is about 1581.7409098286.

The spelling of 3957364393 in words is "three billion, nine hundred fifty-seven million, three hundred sixty-four thousand, three hundred ninety-three".