256412849 has 16 divisors (see below), whose sum is σ = 328327296. Its totient is φ = 194400000.

The previous prime is 256412843. The next prime is 256412881. The reversal of 256412849 is 948214652.

It is a cyclic number.

It is not a de Polignac number, because 256412849 - 2⁴ = 256412833 is a prime.

It is a super-3 number, since 3×256412849³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (256412843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42152 + ... + 47849.

It is an arithmetic number, because the mean of its divisors is an integer number (20520456).

Almost surely, 2^256412849 is an apocalyptic number.

It is an amenable number.

256412849 is a deficient number, since it is larger than the sum of its proper divisors (71914447).

256412849 is a wasteful number, since it uses less digits than its factorization.

256412849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90056.

The product of its digits is 138240, while the sum is 41.

The square root of 256412849 is about 16012.8963338929. The cubic root of 256412849 is about 635.3015692019.

It can be divided in two parts, 25641 and 2849, that multiplied together give a square (73051209 = 8547²).

The spelling of 256412849 in words is "two hundred fifty-six million, four hundred twelve thousand, eight hundred forty-nine".