249229313 has 2 divisors, whose sum is σ = 249229314. Its totient is φ = 249229312.

The previous prime is 249229303. The next prime is 249229319. The reversal of 249229313 is 313922942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246866944 + 2362369 = 15712^2 + 1537^2 .

It is a cyclic number.

It is not a de Polignac number, because 249229313 - 2²² = 245035009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (249229319) 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 as a sum of consecutive naturals, namely, 124614656 + 124614657.

It is an arithmetic number, because the mean of its divisors is an integer number (124614657).

Almost surely, 2^249229313 is an apocalyptic number.

It is an amenable number.

249229313 is a deficient number, since it is larger than the sum of its proper divisors (1).

249229313 is an equidigital number, since it uses as much as digits as its factorization.

249229313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 249229313 is about 15786.9982263887. The cubic root of 249229313 is about 629.3125220980.

The spelling of 249229313 in words is "two hundred forty-nine million, two hundred twenty-nine thousand, three hundred thirteen".