56923739 has 4 divisors (see below), whose sum is σ = 56959056. Its totient is φ = 56888424.

The previous prime is 56923733. The next prime is 56923759. The reversal of 56923739 is 93732965.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93732965 = 5 ⋅18746593.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56923739 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 56923739.

It is not an unprimeable number, because it can be changed into a prime (56923733) 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, 15119 + ... + 18504.

It is an arithmetic number, because the mean of its divisors is an integer number (14239764).

Almost surely, 2^56923739 is an apocalyptic number.

56923739 is a deficient number, since it is larger than the sum of its proper divisors (35317).

56923739 is a wasteful number, since it uses less digits than its factorization.

56923739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35316.

The product of its digits is 306180, while the sum is 44.

The square root of 56923739 is about 7544.7822367514. The cubic root of 56923739 is about 384.6784046304.

The spelling of 56923739 in words is "fifty-six million, nine hundred twenty-three thousand, seven hundred thirty-nine".