256792459 has 8 divisors (see below), whose sum is σ = 320156928. Its totient is φ = 200097960.

The previous prime is 256792457. The next prime is 256792513. The reversal of 256792459 is 954297652.

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 256792459 - 2¹ = 256792457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256792451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1667407 + ... + 1667560.

It is an arithmetic number, because the mean of its divisors is an integer number (40019616).

Almost surely, 2^256792459 is an apocalyptic number.

256792459 is a deficient number, since it is larger than the sum of its proper divisors (63364469).

256792459 is a wasteful number, since it uses less digits than its factorization.

256792459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334985.

The product of its digits is 1360800, while the sum is 49.

The square root of 256792459 is about 16024.7452085829. The cubic root of 256792459 is about 635.6149283211.

The spelling of 256792459 in words is "two hundred fifty-six million, seven hundred ninety-two thousand, four hundred fifty-nine".