45307789 has 2 divisors, whose sum is σ = 45307790. Its totient is φ = 45307788.

The previous prime is 45307783. The next prime is 45307807. The reversal of 45307789 is 98770354.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37088100 + 8219689 = 6090^2 + 2867^2 .

It is a cyclic number.

It is not a de Polignac number, because 45307789 - 2³ = 45307781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45307781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22653894 + 22653895.

It is an arithmetic number, because the mean of its divisors is an integer number (22653895).

Almost surely, 2^45307789 is an apocalyptic number.

It is an amenable number.

45307789 is a deficient number, since it is larger than the sum of its proper divisors (1).

45307789 is an equidigital number, since it uses as much as digits as its factorization.

45307789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 45307789 is about 6731.1060755273. The cubic root of 45307789 is about 356.4984312507.

The spelling of 45307789 in words is "forty-five million, three hundred seven thousand, seven hundred eighty-nine".