45468809 has 4 divisors (see below), whose sum is σ = 45508116. Its totient is φ = 45429504.

The previous prime is 45468803. The next prime is 45468821. The reversal of 45468809 is 90886454.

It is a happy number.

45468809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24720784 + 20748025 = 4972^2 + 4555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45468809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45468809.

It is not an unprimeable number, because it can be changed into a prime (45468803) 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 3 ways as a sum of consecutive naturals, for example, 17864 + ... + 20249.

It is an arithmetic number, because the mean of its divisors is an integer number (11377029).

Almost surely, 2^45468809 is an apocalyptic number.

It is an amenable number.

45468809 is a deficient number, since it is larger than the sum of its proper divisors (39307).

45468809 is a wasteful number, since it uses less digits than its factorization.

45468809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39306.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 45468809 is about 6743.0563545028. The cubic root of 45468809 is about 356.9202535641.

The spelling of 45468809 in words is "forty-five million, four hundred sixty-eight thousand, eight hundred nine".