56438393 has 8 divisors (see below), whose sum is σ = 62079456. Its totient is φ = 51306420.

The previous prime is 56438387. The next prime is 56438413. The reversal of 56438393 is 39383465.

It is not a de Polignac number, because 56438393 - 2¹² = 56434297 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 56438393.

It is not an unprimeable number, because it can be changed into a prime (56438323) 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, 19871 + ... + 22532.

It is an arithmetic number, because the mean of its divisors is an integer number (7759932).

Almost surely, 2^56438393 is an apocalyptic number.

It is an amenable number.

56438393 is a deficient number, since it is larger than the sum of its proper divisors (5641063).

56438393 is an equidigital number, since it uses as much as digits as its factorization.

56438393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42436 (or 42414 counting only the distinct ones).

The product of its digits is 233280, while the sum is 41.

The square root of 56438393 is about 7512.5490347817. The cubic root of 56438393 is about 383.5819945968.

The spelling of 56438393 in words is "fifty-six million, four hundred thirty-eight thousand, three hundred ninety-three".