249222 has 16 divisors (see below), whose sum is σ = 506160. Its totient is φ = 81792.

The previous prime is 249217. The next prime is 249229. The reversal of 249222 is 222942.

It is a super-2 number, since 2×249222² = 124223210568, 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 249222.

It is not an unprimeable number, because it can be changed into a prime (249229) by changing a digit.

249222 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 7 ways as a sum of consecutive naturals, for example, 154 + ... + 722.

It is an arithmetic number, because the mean of its divisors is an integer number (31635).

2²⁴⁹²²² is an apocalyptic number.

249222 is an abundant number, since it is smaller than the sum of its proper divisors (256938).

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

249222 is a wasteful number, since it uses less digits than its factorization.

249222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647.

The product of its digits is 576, while the sum is 21.

The square root of 249222 is about 499.2213937723. The cubic root of 249222 is about 62.9306366846.

It can be divided in two parts, 249 and 222, that multiplied together give a triangular number (55278 = T₃₃₂).

The spelling of 249222 in words is "two hundred forty-nine thousand, two hundred twenty-two".