249535 has 16 divisors (see below), whose sum is σ = 352800. Its totient is φ = 167040.

The previous prime is 249533. The next prime is 249539. The reversal of 249535 is 535942.

It is not a de Polignac number, because 249535 - 2¹ = 249533 is a prime.

249535 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249533) 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, 541 + ... + 889.

It is an arithmetic number, because the mean of its divisors is an integer number (22050).

2²⁴⁹⁵³⁵ is an apocalyptic number.

249535 is a deficient number, since it is larger than the sum of its proper divisors (103265).

249535 is a wasteful number, since it uses less digits than its factorization.

249535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378.

The product of its digits is 5400, while the sum is 28.

The square root of 249535 is about 499.5347835737. The cubic root of 249535 is about 62.9569707015.

It can be divided in two parts, 249 and 535, that added together give a square (784 = 28²).

The spelling of 249535 in words is "two hundred forty-nine thousand, five hundred thirty-five".