256946959 has 8 divisors (see below), whose sum is σ = 278697888. Its totient is φ = 235933440.

The previous prime is 256946953. The next prime is 256946969. The reversal of 256946959 is 959649652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256946959 - 2⁵ = 256946927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256946953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183627 + ... + 185020.

It is an arithmetic number, because the mean of its divisors is an integer number (34837236).

Almost surely, 2^256946959 is an apocalyptic number.

256946959 is a deficient number, since it is larger than the sum of its proper divisors (21750929).

256946959 is a wasteful number, since it uses less digits than its factorization.

256946959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368705.

The product of its digits is 5248800, while the sum is 55.

The square root of 256946959 is about 16029.5651531787. The cubic root of 256946959 is about 635.7423760127.

The spelling of 256946959 in words is "two hundred fifty-six million, nine hundred forty-six thousand, nine hundred fifty-nine".