256772239 has 2 divisors, whose sum is σ = 256772240. Its totient is φ = 256772238.

The previous prime is 256772179. The next prime is 256772339. The reversal of 256772239 is 932277652.

256772239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256772239 - 2⁷ = 256772111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 256772195 and 256772204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256772339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128386119 + 128386120.

It is an arithmetic number, because the mean of its divisors is an integer number (128386120).

Almost surely, 2^256772239 is an apocalyptic number.

256772239 is a deficient number, since it is larger than the sum of its proper divisors (1).

256772239 is an equidigital number, since it uses as much as digits as its factorization.

256772239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 43.

The square root of 256772239 is about 16024.1142968964. The cubic root of 256772239 is about 635.5982449765.

The spelling of 256772239 in words is "two hundred fifty-six million, seven hundred seventy-two thousand, two hundred thirty-nine".