45009989 has 2 divisors, whose sum is σ = 45009990. Its totient is φ = 45009988.

The previous prime is 45009983. The next prime is 45010051. The reversal of 45009989 is 98990054.

45009989 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., 43890625 + 1119364 = 6625^2 + 1058^2 .

It is a cyclic number.

It is not a de Polignac number, because 45009989 - 2¹⁶ = 44944453 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 (45009983) 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, 22504994 + 22504995.

It is an arithmetic number, because the mean of its divisors is an integer number (22504995).

Almost surely, 2^45009989 is an apocalyptic number.

It is an amenable number.

45009989 is a deficient number, since it is larger than the sum of its proper divisors (1).

45009989 is an equidigital number, since it uses as much as digits as its factorization.

45009989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 45009989 is about 6708.9484272872. The cubic root of 45009989 is about 355.7156468776.

The spelling of 45009989 in words is "forty-five million, nine thousand, nine hundred eighty-nine".