255469789 has 2 divisors, whose sum is σ = 255469790. Its totient is φ = 255469788.

The previous prime is 255469777. The next prime is 255469813. The reversal of 255469789 is 987964552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230888025 + 24581764 = 15195^2 + 4958^2 .

It is a cyclic number.

It is not a de Polignac number, because 255469789 - 2¹¹ = 255467741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255469189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127734894 + 127734895.

It is an arithmetic number, because the mean of its divisors is an integer number (127734895).

Almost surely, 2^255469789 is an apocalyptic number.

It is an amenable number.

255469789 is a deficient number, since it is larger than the sum of its proper divisors (1).

255469789 is an equidigital number, since it uses as much as digits as its factorization.

255469789 is an evil number, because the sum of its binary digits is even.

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

The square root of 255469789 is about 15983.4223181395. The cubic root of 255469789 is about 634.5217545210.

The spelling of 255469789 in words is "two hundred fifty-five million, four hundred sixty-nine thousand, seven hundred eighty-nine".