44320809 has 16 divisors (see below), whose sum is σ = 63776384. Its totient is φ = 27216000.

The previous prime is 44320807. The next prime is 44320813. The reversal of 44320809 is 90802344.

It is a happy number.

It is not a de Polignac number, because 44320809 - 2¹ = 44320807 is a prime.

It is a super-2 number, since 2×44320809² = 3928668220828962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44320807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23709 + ... + 25509.

It is an arithmetic number, because the mean of its divisors is an integer number (3986024).

Almost surely, 2^44320809 is an apocalyptic number.

It is an amenable number.

44320809 is a deficient number, since it is larger than the sum of its proper divisors (19455575).

44320809 is a wasteful number, since it uses less digits than its factorization.

44320809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 44320809 is about 6657.3875506838. The cubic root of 44320809 is about 353.8907623624.

The spelling of 44320809 in words is "forty-four million, three hundred twenty thousand, eight hundred nine".