45890309 has 2 divisors, whose sum is σ = 45890310. Its totient is φ = 45890308.

The previous prime is 45890303. The next prime is 45890321. The reversal of 45890309 is 90309854.

45890309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39413284 + 6477025 = 6278^2 + 2545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45890309 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45890303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22945154 + 22945155.

It is an arithmetic number, because the mean of its divisors is an integer number (22945155).

Almost surely, 2^45890309 is an apocalyptic number.

It is an amenable number.

45890309 is a deficient number, since it is larger than the sum of its proper divisors (1).

45890309 is an equidigital number, since it uses as much as digits as its factorization.

45890309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 45890309 is about 6774.2386288055. The cubic root of 45890309 is about 358.0197574481.

The spelling of 45890309 in words is "forty-five million, eight hundred ninety thousand, three hundred nine".