249449250 has 64 divisors (see below), whose sum is σ = 642769920. Its totient is φ = 64368000.

The previous prime is 249449231. The next prime is 249449251. The reversal of 249449250 is 52944942.

It is a junction number, because it is equal to n+sod(n) for n = 249449199 and 249449208.

It is not an unprimeable number, because it can be changed into a prime (249449251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17886 + ... + 28614.

It is an arithmetic number, because the mean of its divisors is an integer number (10043280).

Almost surely, 2^249449250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249449250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321384960).

249449250 is an abundant number, since it is smaller than the sum of its proper divisors (393320670).

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

249449250 is a wasteful number, since it uses less digits than its factorization.

249449250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10780 (or 10770 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 249449250 is about 15793.9624540519. The cubic root of 249449250 is about 629.4975838156.

The spelling of 249449250 in words is "two hundred forty-nine million, four hundred forty-nine thousand, two hundred fifty".