249922 has 16 divisors (see below), whose sum is σ = 403200. Its totient is φ = 115920.

The previous prime is 249911. The next prime is 249923. The reversal of 249922 is 229942.

It is a happy number.

It is a super-2 number, since 2×249922² = 124922012168, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249923) by changing a digit.

249922 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1729 + ... + 1867.

It is an arithmetic number, because the mean of its divisors is an integer number (25200).

2²⁴⁹⁹²² is an apocalyptic number.

249922 is a deficient number, since it is larger than the sum of its proper divisors (153278).

249922 is a wasteful number, since it uses less digits than its factorization.

249922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201.

The product of its digits is 2592, while the sum is 28.

The square root of 249922 is about 499.9219939151. The cubic root of 249922 is about 62.9895002238.

The spelling of 249922 in words is "two hundred forty-nine thousand, nine hundred twenty-two".