45008989 has 2 divisors, whose sum is σ = 45008990. Its totient is φ = 45008988.

The previous prime is 45008987. The next prime is 45009001. The reversal of 45008989 is 98980054.

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., 32012964 + 12996025 = 5658^2 + 3605^2 .

It is a cyclic number.

It is not a de Polignac number, because 45008989 - 2¹ = 45008987 is a prime.

Together with 45008987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45008987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22504494 + 22504495.

It is an arithmetic number, because the mean of its divisors is an integer number (22504495).

Almost surely, 2^45008989 is an apocalyptic number.

It is an amenable number.

45008989 is a deficient number, since it is larger than the sum of its proper divisors (1).

45008989 is an equidigital number, since it uses as much as digits as its factorization.

45008989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 45008989 is about 6708.8738995453. The cubic root of 45008989 is about 355.7130125121.

The spelling of 45008989 in words is "forty-five million, eight thousand, nine hundred eighty-nine".