255689479 has 8 divisors (see below), whose sum is σ = 271813680. Its totient is φ = 239832000.

The previous prime is 255689471. The next prime is 255689509. The reversal of 255689479 is 974986552.

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 255689479 - 2³ = 255689471 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 (255689471) 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, 64702 + ... + 68539.

It is an arithmetic number, because the mean of its divisors is an integer number (33976710).

Almost surely, 2^255689479 is an apocalyptic number.

255689479 is a deficient number, since it is larger than the sum of its proper divisors (16124201).

255689479 is a wasteful number, since it uses less digits than its factorization.

255689479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133361.

The product of its digits is 5443200, while the sum is 55.

The square root of 255689479 is about 15990.2932743587. The cubic root of 255689479 is about 634.7035870391.

The spelling of 255689479 in words is "two hundred fifty-five million, six hundred eighty-nine thousand, four hundred seventy-nine".