44138169 has 16 divisors (see below), whose sum is σ = 66220800. Its totient is φ = 29051568.

The previous prime is 44138161. The next prime is 44138179. The reversal of 44138169 is 96183144.

It is not a de Polignac number, because 44138169 - 2³ = 44138161 is a prime.

It is a super-2 number, since 2×44138169² = 3896355925345122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44138161) 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, 8214 + ... + 12479.

It is an arithmetic number, because the mean of its divisors is an integer number (4138800).

Almost surely, 2^44138169 is an apocalyptic number.

It is an amenable number.

44138169 is a deficient number, since it is larger than the sum of its proper divisors (22082631).

44138169 is a wasteful number, since it uses less digits than its factorization.

44138169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20781 (or 20775 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 44138169 is about 6643.6562975518. The cubic root of 44138169 is about 353.4039812650.

The spelling of 44138169 in words is "forty-four million, one hundred thirty-eight thousand, one hundred sixty-nine".