56839939 has 12 divisors (see below), whose sum is σ = 62256600. Its totient is φ = 51864384.

The previous prime is 56839927. The next prime is 56839961. The reversal of 56839939 is 93993865.

It is a happy number.

56839939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-56839939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56839999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13152 + ... + 16930.

It is an arithmetic number, because the mean of its divisors is an integer number (5188050).

Almost surely, 2^56839939 is an apocalyptic number.

56839939 is a deficient number, since it is larger than the sum of its proper divisors (5416661).

56839939 is a wasteful number, since it uses less digits than its factorization.

56839939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894 (or 3881 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 52.

The square root of 56839939 is about 7539.2266844816. The cubic root of 56839939 is about 384.4895444551.

The spelling of 56839939 in words is "fifty-six million, eight hundred thirty-nine thousand, nine hundred thirty-nine".