259749 has 36 divisors (see below), whose sum is σ = 474240. Its totient is φ = 136080.

The previous prime is 259733. The next prime is 259751. The reversal of 259749 is 947952.

It is not a de Polignac number, because 259749 - 2⁴ = 259733 is a prime.

Its product of digits (22680) is a multiple of the sum of its prime divisors (60).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259949) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8364 + ... + 8394.

2²⁵⁹⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

259749 is a deficient number, since it is larger than the sum of its proper divisors (214491).

259749 is a wasteful number, since it uses less digits than its factorization.

259749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 60 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 259749 is about 509.6557661795. The cubic root of 259749 is about 63.8044978043.

The spelling of 259749 in words is "two hundred fifty-nine thousand, seven hundred forty-nine".