244013009 has 2 divisors, whose sum is σ = 244013010. Its totient is φ = 244013008.

The previous prime is 244012999. The next prime is 244013023. The reversal of 244013009 is 900310442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 237622225 + 6390784 = 15415^2 + 2528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244013009 is a prime.

It is a super-2 number, since 2×244013009² = 119084697122468162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (244013309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122006504 + 122006505.

It is an arithmetic number, because the mean of its divisors is an integer number (122006505).

Almost surely, 2^244013009 is an apocalyptic number.

It is an amenable number.

244013009 is a deficient number, since it is larger than the sum of its proper divisors (1).

244013009 is an equidigital number, since it uses as much as digits as its factorization.

244013009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 244013009 is about 15620.9157542060. The cubic root of 244013009 is about 624.8910820334.

The spelling of 244013009 in words is "two hundred forty-four million, thirteen thousand, nine".