249529 has 8 divisors (see below), whose sum is σ = 292160. Its totient is φ = 208656.

The previous prime is 249521. The next prime is 249533. The reversal of 249529 is 925942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 249529 - 2³ = 249521 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 249529.

It is not an unprimeable number, because it can be changed into a prime (249521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114 + ... + 715.

It is an arithmetic number, because the mean of its divisors is an integer number (36520).

2²⁴⁹⁵²⁹ is an apocalyptic number.

It is an amenable number.

249529 is a deficient number, since it is larger than the sum of its proper divisors (42631).

249529 is an equidigital number, since it uses as much as digits as its factorization.

249529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879.

The product of its digits is 6480, while the sum is 31.

The square root of 249529 is about 499.5287779498. The cubic root of 249529 is about 62.9564661031.

Subtracting from 249529 its product of digits (6480), we obtain a square (243049 = 493²).

The spelling of 249529 in words is "two hundred forty-nine thousand, five hundred twenty-nine".