44138433 has 4 divisors (see below), whose sum is σ = 58851248. Its totient is φ = 29425620.

The previous prime is 44138429. The next prime is 44138459. The reversal of 44138433 is 33483144.

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 44138433 - 2² = 44138429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44138433.

It is not an unprimeable number, because it can be changed into a prime (44138333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7356403 + ... + 7356408.

It is an arithmetic number, because the mean of its divisors is an integer number (14712812).

Almost surely, 2^44138433 is an apocalyptic number.

It is an amenable number.

44138433 is a deficient number, since it is larger than the sum of its proper divisors (14712815).

44138433 is a wasteful number, since it uses less digits than its factorization.

44138433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14712814.

The product of its digits is 13824, while the sum is 30.

The square root of 44138433 is about 6643.6761660996. The cubic root of 44138433 is about 353.4046858590.

The spelling of 44138433 in words is "forty-four million, one hundred thirty-eight thousand, four hundred thirty-three".