45000009 has 16 divisors (see below), whose sum is σ = 68087040. Its totient is φ = 29360880.

The previous prime is 44999971. The next prime is 45000017. The reversal of 45000009 is 90000054.

45000009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45000009 - 2¹¹ = 44997961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44999955 and 45000000.

It is not an unprimeable number, because it can be changed into a prime (45000019) 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 in 15 ways as a sum of consecutive naturals, for example, 16462 + ... + 18999.

It is an arithmetic number, because the mean of its divisors is an integer number (4255440).

Almost surely, 2^45000009 is an apocalyptic number.

It is an amenable number.

45000009 is a deficient number, since it is larger than the sum of its proper divisors (23087031).

45000009 is a wasteful number, since it uses less digits than its factorization.

45000009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35517 (or 35511 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 45000009 is about 6708.2046033197. The cubic root of 45000009 is about 355.6893541616.

The spelling of 45000009 in words is "forty-five million, nine", and thus it is an aban number and an uban number.