249997212 has 96 divisors (see below), whose sum is σ = 712051200. Its totient is φ = 75499776.

The previous prime is 249997211. The next prime is 249997217. The reversal of 249997212 is 212799942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249997211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44548 + ... + 49844.

It is an arithmetic number, because the mean of its divisors is an integer number (7417200).

Almost surely, 2^249997212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249997212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356025600).

249997212 is an abundant number, since it is smaller than the sum of its proper divisors (462053988).

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

249997212 is a wasteful number, since it uses less digits than its factorization.

249997212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5352 (or 5344 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 249997212 is about 15811.3001362949. The cubic root of 249997212 is about 629.9581831655.

The spelling of 249997212 in words is "two hundred forty-nine million, nine hundred ninety-seven thousand, two hundred twelve".