249344213 has 2 divisors, whose sum is σ = 249344214. Its totient is φ = 249344212.

The previous prime is 249344209. The next prime is 249344231. The reversal of 249344213 is 312443942.

Together with next prime (249344231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225510289 + 23833924 = 15017^2 + 4882^2 .

It is a cyclic number.

It is not a de Polignac number, because 249344213 - 2² = 249344209 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 249344213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249344243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124672106 + 124672107.

It is an arithmetic number, because the mean of its divisors is an integer number (124672107).

Almost surely, 2^249344213 is an apocalyptic number.

It is an amenable number.

249344213 is a deficient number, since it is larger than the sum of its proper divisors (1).

249344213 is an equidigital number, since it uses as much as digits as its factorization.

249344213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 249344213 is about 15790.6368775930. The cubic root of 249344213 is about 629.4092160474.

The spelling of 249344213 in words is "two hundred forty-nine million, three hundred forty-four thousand, two hundred thirteen".