45438289 has 4 divisors (see below), whose sum is σ = 48933556. Its totient is φ = 41943024.

The previous prime is 45438269. The next prime is 45438307. The reversal of 45438289 is 98283454.

45438289 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 2666689 + 42771600 = 1633^2 + 6540^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45438289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45438269) 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, 1747614 + ... + 1747639.

It is an arithmetic number, because the mean of its divisors is an integer number (12233389).

Almost surely, 2^45438289 is an apocalyptic number.

It is an amenable number.

45438289 is a deficient number, since it is larger than the sum of its proper divisors (3495267).

45438289 is a wasteful number, since it uses less digits than its factorization.

45438289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3495266.

The product of its digits is 276480, while the sum is 43.

The square root of 45438289 is about 6740.7929058828. The cubic root of 45438289 is about 356.8403772374.

The spelling of 45438289 in words is "forty-five million, four hundred thirty-eight thousand, two hundred eighty-nine".