249271259 has 2 divisors, whose sum is σ = 249271260. Its totient is φ = 249271258.

The previous prime is 249271223. The next prime is 249271277. The reversal of 249271259 is 952172942.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249271259 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (249271219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124635629 + 124635630.

It is an arithmetic number, because the mean of its divisors is an integer number (124635630).

Almost surely, 2^249271259 is an apocalyptic number.

249271259 is a deficient number, since it is larger than the sum of its proper divisors (1).

249271259 is an equidigital number, since it uses as much as digits as its factorization.

249271259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 249271259 is about 15788.3266687765. The cubic root of 249271259 is about 629.3478251447.

The spelling of 249271259 in words is "two hundred forty-nine million, two hundred seventy-one thousand, two hundred fifty-nine".