44138129 has 8 divisors (see below), whose sum is σ = 50605248. Its totient is φ = 37711440.

The previous prime is 44138119. The next prime is 44138131. The reversal of 44138129 is 92183144.

It is a happy number.

44138129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44138129 - 2⁴ = 44138113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44138095 and 44138104.

It is not an unprimeable number, because it can be changed into a prime (44138119) 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 7 ways as a sum of consecutive naturals, for example, 7727 + ... + 12164.

It is an arithmetic number, because the mean of its divisors is an integer number (6325656).

Almost surely, 2^44138129 is an apocalyptic number.

It is an amenable number.

44138129 is a deficient number, since it is larger than the sum of its proper divisors (6467119).

44138129 is a wasteful number, since it uses less digits than its factorization.

44138129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20215.

The product of its digits is 6912, while the sum is 32.

The square root of 44138129 is about 6643.6532871606. The cubic root of 44138129 is about 353.4038745081.

The spelling of 44138129 in words is "forty-four million, one hundred thirty-eight thousand, one hundred twenty-nine".