255299939 has 2 divisors, whose sum is σ = 255299940. Its totient is φ = 255299938.

The previous prime is 255299929. The next prime is 255299953. The reversal of 255299939 is 939992552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 255299939 - 2⁴ = 255299923 is a prime.

It is not a weakly prime, because it can be changed into another prime (255299929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127649969 + 127649970.

It is an arithmetic number, because the mean of its divisors is an integer number (127649970).

Almost surely, 2^255299939 is an apocalyptic number.

255299939 is a deficient number, since it is larger than the sum of its proper divisors (1).

255299939 is an equidigital number, since it uses as much as digits as its factorization.

255299939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1968300, while the sum is 53.

The square root of 255299939 is about 15978.1081170456. The cubic root of 255299939 is about 634.3811019951.

The spelling of 255299939 in words is "two hundred fifty-five million, two hundred ninety-nine thousand, nine hundred thirty-nine".