249290 has 16 divisors (see below), whose sum is σ = 455112. Its totient is φ = 98304.

The previous prime is 249287. The next prime is 249311. The reversal of 249290 is 92942.

It can be written as a sum of positive squares in 4 ways, for example, as 243049 + 6241 = 493^2 + 79^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842 + ... + 1098.

2²⁴⁹²⁹⁰ is an apocalyptic number.

249290 is a deficient number, since it is larger than the sum of its proper divisors (205822).

249290 is a wasteful number, since it uses less digits than its factorization.

249290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 249290 is about 499.2894951829. The cubic root of 249290 is about 62.9363596868.

The spelling of 249290 in words is "two hundred forty-nine thousand, two hundred ninety".