44491309 has 4 divisors (see below), whose sum is σ = 44518716. Its totient is φ = 44463904.

The previous prime is 44491301. The next prime is 44491313. The reversal of 44491309 is 90319444.

44491309 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 29398084 + 15093225 = 5422^2 + 3885^2 .

It is a cyclic number.

It is not a de Polignac number, because 44491309 - 2³ = 44491301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44491301) 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, 11104 + ... + 14569.

It is an arithmetic number, because the mean of its divisors is an integer number (11129679).

Almost surely, 2^44491309 is an apocalyptic number.

It is an amenable number.

44491309 is a deficient number, since it is larger than the sum of its proper divisors (27407).

44491309 is a wasteful number, since it uses less digits than its factorization.

44491309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27406.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 44491309 is about 6670.1805822631. The cubic root of 44491309 is about 354.3439818797.

The spelling of 44491309 in words is "forty-four million, four hundred ninety-one thousand, three hundred nine".