256916379 has 16 divisors (see below), whose sum is σ = 348084000. Its totient is φ = 168535296.

The previous prime is 256916377. The next prime is 256916381. The reversal of 256916379 is 973619652.

It is an interprime number because it is at equal distance from previous prime (256916377) and next prime (256916381).

It is not a de Polignac number, because 256916379 - 2¹ = 256916377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256916377) 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, 46087 + ... + 51359.

It is an arithmetic number, because the mean of its divisors is an integer number (21755250).

Almost surely, 2^256916379 is an apocalyptic number.

256916379 is a deficient number, since it is larger than the sum of its proper divisors (91167621).

256916379 is a wasteful number, since it uses less digits than its factorization.

256916379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5534.

The product of its digits is 612360, while the sum is 48.

The square root of 256916379 is about 16028.6112623646. The cubic root of 256916379 is about 635.7171544998.

The spelling of 256916379 in words is "two hundred fifty-six million, nine hundred sixteen thousand, three hundred seventy-nine".