44890009 has 4 divisors (see below), whose sum is σ = 44903716. Its totient is φ = 44876304.

The previous prime is 44890003. The next prime is 44890019. The reversal of 44890009 is 90009844.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9784384 + 35105625 = 3128^2 + 5925^2 .

It is a cyclic number.

It is not a de Polignac number, because 44890009 - 2⁹ = 44889497 is a prime.

It is a super-2 number, since 2×44890009² = 4030225816040162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44890003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1267 + ... + 9559.

It is an arithmetic number, because the mean of its divisors is an integer number (11225929).

Almost surely, 2^44890009 is an apocalyptic number.

It is an amenable number.

44890009 is a deficient number, since it is larger than the sum of its proper divisors (13707).

44890009 is an equidigital number, since it uses as much as digits as its factorization.

44890009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13706.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 44890009 is about 6700.0006716418. Note that the first 3 decimals coincide. The cubic root of 44890009 is about 355.3992967928.

The spelling of 44890009 in words is "forty-four million, eight hundred ninety thousand, nine".