73244309 has 2 divisors, whose sum is σ = 73244310. Its totient is φ = 73244308.

The previous prime is 73244299. The next prime is 73244321. The reversal of 73244309 is 90344237.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48344209 + 24900100 = 6953^2 + 4990^2 .

It is a cyclic number.

It is not a de Polignac number, because 73244309 - 2⁴ = 73244293 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73244399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36622154 + 36622155.

It is an arithmetic number, because the mean of its divisors is an integer number (36622155).

Almost surely, 2^73244309 is an apocalyptic number.

It is an amenable number.

73244309 is a deficient number, since it is larger than the sum of its proper divisors (1).

73244309 is an equidigital number, since it uses as much as digits as its factorization.

73244309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 73244309 is about 8558.2889060840. The cubic root of 73244309 is about 418.3996334481.

The spelling of 73244309 in words is "seventy-three million, two hundred forty-four thousand, three hundred nine".