45307909 has 2 divisors, whose sum is σ = 45307910. Its totient is φ = 45307908.

The previous prime is 45307901. The next prime is 45307963. The reversal of 45307909 is 90970354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32239684 + 13068225 = 5678^2 + 3615^2 .

It is a cyclic number.

It is not a de Polignac number, because 45307909 - 2³ = 45307901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45307901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22653954 + 22653955.

It is an arithmetic number, because the mean of its divisors is an integer number (22653955).

Almost surely, 2^45307909 is an apocalyptic number.

It is an amenable number.

45307909 is a deficient number, since it is larger than the sum of its proper divisors (1).

45307909 is an equidigital number, since it uses as much as digits as its factorization.

45307909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 45307909 is about 6731.1149893610. The cubic root of 45307909 is about 356.4987459852.

The spelling of 45307909 in words is "forty-five million, three hundred seven thousand, nine hundred nine".