244199309 has 2 divisors, whose sum is σ = 244199310. Its totient is φ = 244199308.

The previous prime is 244199281. The next prime is 244199311. The reversal of 244199309 is 903991442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242674084 + 1525225 = 15578^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 244199309 - 2²⁴ = 227422093 is a prime.

Together with 244199311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244199009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122099654 + 122099655.

It is an arithmetic number, because the mean of its divisors is an integer number (122099655).

Almost surely, 2^244199309 is an apocalyptic number.

It is an amenable number.

244199309 is a deficient number, since it is larger than the sum of its proper divisors (1).

244199309 is an equidigital number, since it uses as much as digits as its factorization.

244199309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 244199309 is about 15626.8777751667. The cubic root of 244199309 is about 625.0500730015.

The spelling of 244199309 in words is "two hundred forty-four million, one hundred ninety-nine thousand, three hundred nine".