249469 has 4 divisors (see below), whose sum is σ = 272160. Its totient is φ = 226780.

The previous prime is 249463. The next prime is 249497. The reversal of 249469 is 964942.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 249469 - 2⁵ = 249437 is a prime.

It is a super-2 number, since 2×249469² = 124469563922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11329 + ... + 11350.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2²⁴⁹⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

249469 is a deficient number, since it is larger than the sum of its proper divisors (22691).

249469 is a wasteful number, since it uses less digits than its factorization.

249469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22690.

The product of its digits is 15552, while the sum is 34.

The square root of 249469 is about 499.4687177392. The cubic root of 249469 is about 62.9514196746.

The spelling of 249469 in words is "two hundred forty-nine thousand, four hundred sixty-nine".