56863839 has 4 divisors (see below), whose sum is σ = 75818456. Its totient is φ = 37909224.

The previous prime is 56863823. The next prime is 56863841. The reversal of 56863839 is 93836865.

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

It is not a de Polignac number, because 56863839 - 2⁴ = 56863823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56863819) 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, 9477304 + ... + 9477309.

It is an arithmetic number, because the mean of its divisors is an integer number (18954614).

Almost surely, 2^56863839 is an apocalyptic number.

56863839 is a deficient number, since it is larger than the sum of its proper divisors (18954617).

56863839 is a wasteful number, since it uses less digits than its factorization.

56863839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18954616.

The product of its digits is 933120, while the sum is 48.

The square root of 56863839 is about 7540.8115610987. The cubic root of 56863839 is about 384.5434268285.

The spelling of 56863839 in words is "fifty-six million, eight hundred sixty-three thousand, eight hundred thirty-nine".