4444438147 has 4 divisors (see below), whose sum is σ = 4444607680. Its totient is φ = 4444268616.

The previous prime is 4444438139. The next prime is 4444438153. The reversal of 4444438147 is 7418344444.

It is a happy number.

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 4444438147 - 2³ = 4444438139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4444438157) 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, 36147 + ... + 100972.

It is an arithmetic number, because the mean of its divisors is an integer number (1111151920).

Almost surely, 2^4444438147 is an apocalyptic number.

4444438147 is a deficient number, since it is larger than the sum of its proper divisors (169533).

4444438147 is a wasteful number, since it uses less digits than its factorization.

4444438147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169532.

The product of its digits is 688128, while the sum is 43.

The square root of 4444438147 is about 66666.6194358166. The cubic root of 4444438147 is about 1644.1406063449.

The spelling of 4444438147 in words is "four billion, four hundred forty-four million, four hundred thirty-eight thousand, one hundred forty-seven".