249822 has 12 divisors (see below), whose sum is σ = 541320. Its totient is φ = 83268.

The previous prime is 249811. The next prime is 249827. The reversal of 249822 is 228942.

It is a super-2 number, since 2×249822² = 124822063368, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 249822.

It is not an unprimeable number, because it can be changed into a prime (249827) by changing a digit.

249822 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6922 + ... + 6957.

It is an arithmetic number, because the mean of its divisors is an integer number (45110).

2²⁴⁹⁸²² is an apocalyptic number.

249822 is an abundant number, since it is smaller than the sum of its proper divisors (291498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249822 is a wasteful number, since it uses less digits than its factorization.

249822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13887 (or 13884 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 249822 is about 499.8219683047. The cubic root of 249822 is about 62.9810978818.

The spelling of 249822 in words is "two hundred forty-nine thousand, eight hundred twenty-two".