56907839 has 4 divisors (see below), whose sum is σ = 57110640. Its totient is φ = 56705040.

The previous prime is 56907827. The next prime is 56907883. The reversal of 56907839 is 93870965.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93870965 = 5 ⋅18774193.

It is a cyclic number.

It is not a de Polignac number, because 56907839 - 2⁸ = 56907583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56907793 and 56907802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56904839) 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, 100979 + ... + 101540.

It is an arithmetic number, because the mean of its divisors is an integer number (14277660).

Almost surely, 2^56907839 is an apocalyptic number.

56907839 is a deficient number, since it is larger than the sum of its proper divisors (202801).

56907839 is a wasteful number, since it uses less digits than its factorization.

56907839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202800.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 56907839 is about 7543.7284548160. The cubic root of 56907839 is about 384.6425850332.

The spelling of 56907839 in words is "fifty-six million, nine hundred seven thousand, eight hundred thirty-nine".