255983449 has 4 divisors (see below), whose sum is σ = 256389760. Its totient is φ = 255577140.

The previous prime is 255983437. The next prime is 255983489. The reversal of 255983449 is 944389552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255983449 - 2²⁵ = 222429017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255983489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202209 + ... + 203470.

It is an arithmetic number, because the mean of its divisors is an integer number (64097440).

Almost surely, 2^255983449 is an apocalyptic number.

It is an amenable number.

255983449 is a deficient number, since it is larger than the sum of its proper divisors (406311).

255983449 is an equidigital number, since it uses as much as digits as its factorization.

255983449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406310.

The product of its digits is 1555200, while the sum is 49.

The square root of 255983449 is about 15999.4827728899. The cubic root of 255983449 is about 634.9467365992.

The spelling of 255983449 in words is "two hundred fifty-five million, nine hundred eighty-three thousand, four hundred forty-nine".