4144139 has 4 divisors (see below), whose sum is σ = 4149600. Its totient is φ = 4138680.

The previous prime is 4144121. The next prime is 4144159. The reversal of 4144139 is 9314414.

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 4144139 - 2²⁰ = 3095563 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4144159) 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, 1364 + ... + 3185.

It is an arithmetic number, because the mean of its divisors is an integer number (1037400).

Almost surely, 2^4144139 is an apocalyptic number.

4144139 is a deficient number, since it is larger than the sum of its proper divisors (5461).

4144139 is an equidigital number, since it uses as much as digits as its factorization.

4144139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5460.

The product of its digits is 1728, while the sum is 26.

The square root of 4144139 is about 2035.7158446109. The cubic root of 4144139 is about 160.6243702378.

The spelling of 4144139 in words is "four million, one hundred forty-four thousand, one hundred thirty-nine".