259284779 has 16 divisors (see below), whose sum is σ = 289535904. Its totient is φ = 230649600.

The previous prime is 259284769. The next prime is 259284791. The reversal of 259284779 is 977482952.

It is a de Polignac number, because none of the positive numbers 2^k-259284779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 259284779.

It is not an unprimeable number, because it can be changed into a prime (259284749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41309 + ... + 47169.

It is an arithmetic number, because the mean of its divisors is an integer number (18095994).

Almost surely, 2^259284779 is an apocalyptic number.

259284779 is a deficient number, since it is larger than the sum of its proper divisors (30251125).

259284779 is a wasteful number, since it uses less digits than its factorization.

259284779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5998.

The product of its digits is 2540160, while the sum is 53.

The square root of 259284779 is about 16102.3221617256. The cubic root of 259284779 is about 637.6646486934.

The spelling of 259284779 in words is "two hundred fifty-nine million, two hundred eighty-four thousand, seven hundred seventy-nine".