249971274 has 48 divisors (see below), whose sum is σ = 625959360. Its totient is φ = 70614720.

The previous prime is 249971273. The next prime is 249971279. The reversal of 249971274 is 472179942.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (249971273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69 + ... + 22359.

It is an arithmetic number, because the mean of its divisors is an integer number (13040820).

Almost surely, 2^249971274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249971274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312979680).

249971274 is an abundant number, since it is smaller than the sum of its proper divisors (375988086).

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

249971274 is a wasteful number, since it uses less digits than its factorization.

249971274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22395 (or 22392 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 249971274 is about 15810.4798788652. The cubic root of 249971274 is about 629.9363956952.

The spelling of 249971274 in words is "two hundred forty-nine million, nine hundred seventy-one thousand, two hundred seventy-four".