255439967 has 2 divisors, whose sum is σ = 255439968. Its totient is φ = 255439966.

The previous prime is 255439957. The next prime is 255440023. The reversal of 255439967 is 769934552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255439967 - 2⁶ = 255439903 is a prime.

It is a super-2 number, since 2×255439967² = 130499153481922178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255439927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127719983 + 127719984.

It is an arithmetic number, because the mean of its divisors is an integer number (127719984).

Almost surely, 2^255439967 is an apocalyptic number.

255439967 is a deficient number, since it is larger than the sum of its proper divisors (1).

255439967 is an equidigital number, since it uses as much as digits as its factorization.

255439967 is an evil number, because the sum of its binary digits is even.

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

The square root of 255439967 is about 15982.4893868258. The cubic root of 255439967 is about 634.4970634813.

The spelling of 255439967 in words is "two hundred fifty-five million, four hundred thirty-nine thousand, nine hundred sixty-seven".