255991914 has 40 divisors (see below), whose sum is σ = 583355520. Its totient is φ = 83881224.

The previous prime is 255991913. The next prime is 255991927. The reversal of 255991914 is 419199552.

255991914 is a `hidden beast` number, since 2 + 559 + 9 + 1 + 91 + 4 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 255991914.

It is not an unprimeable number, because it can be changed into a prime (255991913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3834 + ... + 22949.

It is an arithmetic number, because the mean of its divisors is an integer number (14583888).

Almost surely, 2^255991914 is an apocalyptic number.

255991914 is an abundant number, since it is smaller than the sum of its proper divisors (327363606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255991914 is a wasteful number, since it uses less digits than its factorization.

255991914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26856 (or 26847 counting only the distinct ones).

The product of its digits is 145800, while the sum is 45.

The square root of 255991914 is about 15999.7473105046. The cubic root of 255991914 is about 634.9537354435.

The spelling of 255991914 in words is "two hundred fifty-five million, nine hundred ninety-one thousand, nine hundred fourteen".