249968353 has 2 divisors, whose sum is σ = 249968354. Its totient is φ = 249968352.

The previous prime is 249968339. The next prime is 249968399. The reversal of 249968353 is 353869942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157577809 + 92390544 = 12553^2 + 9612^2 .

It is a cyclic number.

It is not a de Polignac number, because 249968353 - 2²¹ = 247871201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249968297 and 249968306.

It is not a weakly prime, because it can be changed into another prime (249968753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124984176 + 124984177.

It is an arithmetic number, because the mean of its divisors is an integer number (124984177).

Almost surely, 2^249968353 is an apocalyptic number.

It is an amenable number.

249968353 is a deficient number, since it is larger than the sum of its proper divisors (1).

249968353 is an equidigital number, since it uses as much as digits as its factorization.

249968353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 49.

The square root of 249968353 is about 15810.3875031575. The cubic root of 249968353 is about 629.9339420114.

The spelling of 249968353 in words is "two hundred forty-nine million, nine hundred sixty-eight thousand, three hundred fifty-three".