44138147 has 4 divisors (see below), whose sum is σ = 44331120. Its totient is φ = 43945176.

The previous prime is 44138131. The next prime is 44138153. The reversal of 44138147 is 74183144.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 44138147 - 2⁴ = 44138131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44134147) 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, 96143 + ... + 96600.

It is an arithmetic number, because the mean of its divisors is an integer number (11082780).

Almost surely, 2^44138147 is an apocalyptic number.

44138147 is a deficient number, since it is larger than the sum of its proper divisors (192973).

44138147 is a wasteful number, since it uses less digits than its factorization.

44138147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192972.

The product of its digits is 10752, while the sum is 32.

The square root of 44138147 is about 6643.6546418368. The cubic root of 44138147 is about 353.4039225487.

The spelling of 44138147 in words is "forty-four million, one hundred thirty-eight thousand, one hundred forty-seven".