44749209 has 4 divisors (see below), whose sum is σ = 59665616. Its totient is φ = 29832804.

The previous prime is 44749193. The next prime is 44749223. The reversal of 44749209 is 90294744.

It is a happy number.

44749209 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 44749209 - 2⁴ = 44749193 is a prime.

It is a super-2 number, since 2×44749209² = 4004983412251362, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (44749279) 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, 7458199 + ... + 7458204.

It is an arithmetic number, because the mean of its divisors is an integer number (14916404).

Almost surely, 2^44749209 is an apocalyptic number.

It is an amenable number.

44749209 is a deficient number, since it is larger than the sum of its proper divisors (14916407).

44749209 is a wasteful number, since it uses less digits than its factorization.

44749209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14916406.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 44749209 is about 6689.4849577527. The cubic root of 44749209 is about 355.0273310968.

The spelling of 44749209 in words is "forty-four million, seven hundred forty-nine thousand, two hundred nine".