259966449 has 16 divisors (see below), whose sum is σ = 391665600. Its totient is φ = 170372448.

The previous prime is 259966423. The next prime is 259966457. The reversal of 259966449 is 944669952.

It is a happy number.

259966449 is a `hidden beast` number, since 2 + 599 + 6 + 6 + 4 + 49 = 666.

It is not a de Polignac number, because 259966449 - 2¹¹ = 259964401 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 259966395 and 259966404.

It is not an unprimeable number, because it can be changed into a prime (259966249) 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 15 ways as a sum of consecutive naturals, for example, 80004 + ... + 83189.

It is an arithmetic number, because the mean of its divisors is an integer number (24479100).

Almost surely, 2^259966449 is an apocalyptic number.

It is an amenable number.

259966449 is a deficient number, since it is larger than the sum of its proper divisors (131699151).

259966449 is a wasteful number, since it uses less digits than its factorization.

259966449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163261 (or 163255 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The square root of 259966449 is about 16123.4750906869. The cubic root of 259966449 is about 638.2229749356. Note that the first 3 decimals are identical.

The spelling of 259966449 in words is "two hundred fifty-nine million, nine hundred sixty-six thousand, four hundred forty-nine".