45689309 has 2 divisors, whose sum is σ = 45689310. Its totient is φ = 45689308.

The previous prime is 45689221. The next prime is 45689327. The reversal of 45689309 is 90398654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31416025 + 14273284 = 5605^2 + 3778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45689309 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45689309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45689359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22844654 + 22844655.

It is an arithmetic number, because the mean of its divisors is an integer number (22844655).

Almost surely, 2^45689309 is an apocalyptic number.

It is an amenable number.

45689309 is a deficient number, since it is larger than the sum of its proper divisors (1).

45689309 is an equidigital number, since it uses as much as digits as its factorization.

45689309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 45689309 is about 6759.3867325372. The cubic root of 45689309 is about 357.4962824201.

The spelling of 45689309 in words is "forty-five million, six hundred eighty-nine thousand, three hundred nine".