255943679 has 4 divisors (see below), whose sum is σ = 258335784. Its totient is φ = 253551576.

The previous prime is 255943673. The next prime is 255943729. The reversal of 255943679 is 976349552.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255943679 - 2¹² = 255939583 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 (255943673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195892 + ... + 1196105.

It is an arithmetic number, because the mean of its divisors is an integer number (64583946).

Almost surely, 2^255943679 is an apocalyptic number.

255943679 is a deficient number, since it is larger than the sum of its proper divisors (2392105).

255943679 is a wasteful number, since it uses less digits than its factorization.

255943679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392104.

The product of its digits is 2041200, while the sum is 50.

The square root of 255943679 is about 15998.2398719359. The cubic root of 255943679 is about 634.9138527811.

The spelling of 255943679 in words is "two hundred fifty-five million, nine hundred forty-three thousand, six hundred seventy-nine".