256797383 has 2 divisors, whose sum is σ = 256797384. Its totient is φ = 256797382.

The previous prime is 256797371. The next prime is 256797389. The reversal of 256797383 is 383797652.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256797383 - 2¹² = 256793287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256797389) 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 as a sum of consecutive naturals, namely, 128398691 + 128398692.

It is an arithmetic number, because the mean of its divisors is an integer number (128398692).

Almost surely, 2^256797383 is an apocalyptic number.

256797383 is a deficient number, since it is larger than the sum of its proper divisors (1).

256797383 is an equidigital number, since it uses as much as digits as its factorization.

256797383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 50.

The square root of 256797383 is about 16024.8988452346. The cubic root of 256797383 is about 635.6189909376.

The spelling of 256797383 in words is "two hundred fifty-six million, seven hundred ninety-seven thousand, three hundred eighty-three".