44138121 has 16 divisors (see below), whose sum is σ = 62376000. Its totient is φ = 27684288.

The previous prime is 44138119. The next prime is 44138131. The reversal of 44138121 is 12183144.

44138121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 44138121 - 2¹ = 44138119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44138091 and 44138100.

It is not an unprimeable number, because it can be changed into a prime (44138131) 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 15 ways as a sum of consecutive naturals, for example, 5895 + ... + 11091.

It is an arithmetic number, because the mean of its divisors is an integer number (3898500).

Almost surely, 2^44138121 is an apocalyptic number.

It is an amenable number.

44138121 is a deficient number, since it is larger than the sum of its proper divisors (18237879).

44138121 is a wasteful number, since it uses less digits than its factorization.

44138121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368.

The product of its digits is 768, while the sum is 24.

The square root of 44138121 is about 6643.6526850822. The cubic root of 44138121 is about 353.4038531567.

The spelling of 44138121 in words is "forty-four million, one hundred thirty-eight thousand, one hundred twenty-one".