249239250 has 96 divisors (see below), whose sum is σ = 725869872. Its totient is φ = 61344000.

The previous prime is 249239219. The next prime is 249239257. The reversal of 249239250 is 52932942.

It can be written as a sum of positive squares in 8 ways, for example, as 136161 + 249103089 = 369^2 + 15783^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (249239257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24990 + ... + 33510.

Almost surely, 2^249239250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249239250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362934936).

249239250 is an abundant number, since it is smaller than the sum of its proper divisors (476630622).

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

249239250 is a wasteful number, since it uses less digits than its factorization.

249239250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8557 (or 8544 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 249239250 is about 15787.3129442600. The cubic root of 249239250 is about 629.3208857415.

The spelling of 249239250 in words is "two hundred forty-nine million, two hundred thirty-nine thousand, two hundred fifty".