259897086 has 40 divisors (see below), whose sum is σ = 613019880. Its totient is φ = 82071792.

The previous prime is 259897069. The next prime is 259897091. The reversal of 259897086 is 680798952.

It is a happy number.

It is a super-2 number, since 2×259897086² = 135092990622582792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39141 + ... + 45296.

It is an arithmetic number, because the mean of its divisors is an integer number (15325497).

Almost surely, 2^259897086 is an apocalyptic number.

259897086 is an abundant number, since it is smaller than the sum of its proper divisors (353122794).

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

259897086 is a wasteful number, since it uses less digits than its factorization.

259897086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84470 (or 84461 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 259897086 is about 16121.3239530753. The cubic root of 259897086 is about 638.1662073563.

The spelling of 259897086 in words is "two hundred fifty-nine million, eight hundred ninety-seven thousand, eighty-six".