255439964 has 24 divisors (see below), whose sum is σ = 483004368. Its totient is φ = 117504000.

The previous prime is 255439957. The next prime is 255439967. The reversal of 255439964 is 469934552.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255439967) 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, 7964 + ... + 23964.

It is an arithmetic number, because the mean of its divisors is an integer number (20125182).

Almost surely, 2^255439964 is an apocalyptic number.

It is an amenable number.

255439964 is a deficient number, since it is larger than the sum of its proper divisors (227564404).

255439964 is a wasteful number, since it uses less digits than its factorization.

255439964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16325 (or 16323 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 47.

The square root of 255439964 is about 15982.4892929731. The cubic root of 255439964 is about 634.4970609973.

The spelling of 255439964 in words is "two hundred fifty-five million, four hundred thirty-nine thousand, nine hundred sixty-four".