255449439 has 12 divisors (see below), whose sum is σ = 421694416. Its totient is φ = 145971072.

The previous prime is 255449437. The next prime is 255449449. The reversal of 255449439 is 934944552.

255449439 is a `hidden beast` number, since 2 + 554 + 4 + 94 + 3 + 9 = 666.

It is not a de Polignac number, because 255449439 - 2¹ = 255449437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255449394 and 255449403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255449437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2027314 + ... + 2027439.

Almost surely, 2^255449439 is an apocalyptic number.

255449439 is a deficient number, since it is larger than the sum of its proper divisors (166244977).

255449439 is a wasteful number, since it uses less digits than its factorization.

255449439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054766 (or 4054763 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 255449439 is about 15982.7857083801. The cubic root of 255449439 is about 634.5049060049.

The spelling of 255449439 in words is "two hundred fifty-five million, four hundred forty-nine thousand, four hundred thirty-nine".