393426379 has 4 divisors (see below), whose sum is σ = 394276576. Its totient is φ = 392576184.

The previous prime is 393426373. The next prime is 393426403. The reversal of 393426379 is 973624393.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-393426379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (393426373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424404 + ... + 425329.

It is an arithmetic number, because the mean of its divisors is an integer number (98569144).

Almost surely, 2^393426379 is an apocalyptic number.

393426379 is a deficient number, since it is larger than the sum of its proper divisors (850197).

393426379 is an equidigital number, since it uses as much as digits as its factorization.

393426379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850196.

The product of its digits is 734832, while the sum is 46.

The square root of 393426379 is about 19834.9786740495. The cubic root of 393426379 is about 732.7477472338.

The spelling of 393426379 in words is "three hundred ninety-three million, four hundred twenty-six thousand, three hundred seventy-nine".