256465479 has 16 divisors (see below), whose sum is σ = 357214464. Its totient is φ = 163363200.

The previous prime is 256465471. The next prime is 256465487. The reversal of 256465479 is 974564652.

It is an interprime number because it is at equal distance from previous prime (256465471) and next prime (256465487).

It is not a de Polignac number, because 256465479 - 2³ = 256465471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256465471) 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, 92544 + ... + 95274.

It is an arithmetic number, because the mean of its divisors is an integer number (22325904).

Almost surely, 2^256465479 is an apocalyptic number.

256465479 is a deficient number, since it is larger than the sum of its proper divisors (100748985).

256465479 is a wasteful number, since it uses less digits than its factorization.

256465479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4118.

The product of its digits is 1814400, while the sum is 48.

The square root of 256465479 is about 16014.5396124896. The cubic root of 256465479 is about 635.3450324869.

It can be divided in two parts, 25646 and 5479, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 256465479 in words is "two hundred fifty-six million, four hundred sixty-five thousand, four hundred seventy-nine".