256214479 has 2 divisors, whose sum is σ = 256214480. Its totient is φ = 256214478.

The previous prime is 256214471. The next prime is 256214509. The reversal of 256214479 is 974412652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256214479 - 2³ = 256214471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256214471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128107239 + 128107240.

It is an arithmetic number, because the mean of its divisors is an integer number (128107240).

Almost surely, 2^256214479 is an apocalyptic number.

256214479 is a deficient number, since it is larger than the sum of its proper divisors (1).

256214479 is an equidigital number, since it uses as much as digits as its factorization.

256214479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 256214479 is about 16006.7010654913. The cubic root of 256214479 is about 635.1376963879.

The spelling of 256214479 in words is "two hundred fifty-six million, two hundred fourteen thousand, four hundred seventy-nine".