249713291 has 2 divisors, whose sum is σ = 249713292. Its totient is φ = 249713290.

The previous prime is 249713267. The next prime is 249713377. The reversal of 249713291 is 192317942.

249713291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249713291 - 2⁶ = 249713227 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (249713201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124856645 + 124856646.

It is an arithmetic number, because the mean of its divisors is an integer number (124856646).

Almost surely, 2^249713291 is an apocalyptic number.

249713291 is a deficient number, since it is larger than the sum of its proper divisors (1).

249713291 is an equidigital number, since it uses as much as digits as its factorization.

249713291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 249713291 is about 15802.3191652365. The cubic root of 249713291 is about 629.7196123587.

The spelling of 249713291 in words is "two hundred forty-nine million, seven hundred thirteen thousand, two hundred ninety-one".