56928439 has 4 divisors (see below), whose sum is σ = 57730320. Its totient is φ = 56126560.

The previous prime is 56928437. The next prime is 56928457. The reversal of 56928439 is 93482965.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93482965 = 5 ⋅18696593.

It is a cyclic number.

It is not a de Polignac number, because 56928439 - 2¹ = 56928437 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 (56928437) 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, 400834 + ... + 400975.

It is an arithmetic number, because the mean of its divisors is an integer number (14432580).

Almost surely, 2^56928439 is an apocalyptic number.

56928439 is a deficient number, since it is larger than the sum of its proper divisors (801881).

56928439 is an equidigital number, since it uses as much as digits as its factorization.

56928439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801880.

The product of its digits is 466560, while the sum is 46.

The square root of 56928439 is about 7545.0937038582. The cubic root of 56928439 is about 384.6889915359.

The spelling of 56928439 in words is "fifty-six million, nine hundred twenty-eight thousand, four hundred thirty-nine".