4447139 has 4 divisors (see below), whose sum is σ = 4451856. Its totient is φ = 4442424.

The previous prime is 4447117. The next prime is 4447151. The reversal of 4447139 is 9317444.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4447139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4447109) 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 3 ways as a sum of consecutive naturals, for example, 404 + ... + 3009.

It is an arithmetic number, because the mean of its divisors is an integer number (1112964).

Almost surely, 2^4447139 is an apocalyptic number.

4447139 is a deficient number, since it is larger than the sum of its proper divisors (4717).

4447139 is a wasteful number, since it uses less digits than its factorization.

4447139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4716.

The product of its digits is 12096, while the sum is 32.

The square root of 4447139 is about 2108.8240799080. The cubic root of 4447139 is about 164.4473583033.

The spelling of 4447139 in words is "four million, four hundred forty-seven thousand, one hundred thirty-nine".