249906222 has 80 divisors (see below), whose sum is σ = 599350752. Its totient is φ = 77552640.

The previous prime is 249906199. The next prime is 249906257. The reversal of 249906222 is 222609942.

It is a happy number.

249906222 is a `hidden beast` number, since 24 + 9 + 9 + 0 + 622 + 2 = 666.

249906222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 283222 + ... + 284102.

Almost surely, 2^249906222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249906222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299675376).

249906222 is an abundant number, since it is smaller than the sum of its proper divisors (349444530).

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

249906222 is a wasteful number, since it uses less digits than its factorization.

249906222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015 (or 1006 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 249906222 is about 15808.4225019450. The cubic root of 249906222 is about 629.8817465122.

The spelling of 249906222 in words is "two hundred forty-nine million, nine hundred six thousand, two hundred twenty-two".