259985412 has 36 divisors (see below), whose sum is σ = 666194620. Its totient is φ = 85473792.

The previous prime is 259985371. The next prime is 259985419. The reversal of 259985412 is 214589952.

It is a happy number.

259985412 is a `hidden beast` number, since 2 + 599 + 8 + 54 + 1 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 86378436 + 173606976 = 9294^2 + 13176^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (259985419) 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 11 ways as a sum of consecutive naturals, for example, 46837 + ... + 52092.

Almost surely, 2^259985412 is an apocalyptic number.

It is an amenable number.

259985412 is an abundant number, since it is smaller than the sum of its proper divisors (406209208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

259985412 is a wasteful number, since it uses less digits than its factorization.

259985412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99012 (or 99007 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 259985412 is about 16124.0631355747. The cubic root of 259985412 is about 638.2384927432.

The spelling of 259985412 in words is "two hundred fifty-nine million, nine hundred eighty-five thousand, four hundred twelve".