256913459 has 16 divisors (see below), whose sum is σ = 303002880. Its totient is φ = 215278560.

The previous prime is 256913453. The next prime is 256913467. The reversal of 256913459 is 954319652.

It is a cyclic number.

It is not a de Polignac number, because 256913459 - 2¹² = 256909363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256913453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8879 + ... + 24344.

It is an arithmetic number, because the mean of its divisors is an integer number (18937680).

Almost surely, 2^256913459 is an apocalyptic number.

256913459 is a deficient number, since it is larger than the sum of its proper divisors (46089421).

256913459 is a wasteful number, since it uses less digits than its factorization.

256913459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33290.

The product of its digits is 291600, while the sum is 44.

The square root of 256913459 is about 16028.5201749881. The cubic root of 256913459 is about 635.7147460623.

The spelling of 256913459 in words is "two hundred fifty-six million, nine hundred thirteen thousand, four hundred fifty-nine".