256676039 has 2 divisors, whose sum is σ = 256676040. Its totient is φ = 256676038.

The previous prime is 256676011. The next prime is 256676053. The reversal of 256676039 is 930676652.

256676039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256676039 - 2²⁴ = 239898823 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256676009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128338019 + 128338020.

It is an arithmetic number, because the mean of its divisors is an integer number (128338020).

Almost surely, 2^256676039 is an apocalyptic number.

256676039 is a deficient number, since it is larger than the sum of its proper divisors (1).

256676039 is an equidigital number, since it uses as much as digits as its factorization.

256676039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 44.

The square root of 256676039 is about 16021.1122897257. The cubic root of 256676039 is about 635.5188592027.

The spelling of 256676039 in words is "two hundred fifty-six million, six hundred seventy-six thousand, thirty-nine".