49307309 has 2 divisors, whose sum is σ = 49307310. Its totient is φ = 49307308.

The previous prime is 49307287. The next prime is 49307317. The reversal of 49307309 is 90370394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29920900 + 19386409 = 5470^2 + 4403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49307309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49307359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24653654 + 24653655.

It is an arithmetic number, because the mean of its divisors is an integer number (24653655).

Almost surely, 2^49307309 is an apocalyptic number.

It is an amenable number.

49307309 is a deficient number, since it is larger than the sum of its proper divisors (1).

49307309 is an equidigital number, since it uses as much as digits as its factorization.

49307309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 49307309 is about 7021.9163338792. The cubic root of 49307309 is about 366.6939688577.

The spelling of 49307309 in words is "forty-nine million, three hundred seven thousand, three hundred nine".