4428139 has 2 divisors, whose sum is σ = 4428140. Its totient is φ = 4428138.

The previous prime is 4428113. The next prime is 4428161. The reversal of 4428139 is 9318244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4428139 - 2¹¹ = 4426091 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4428139.

It is not a weakly prime, because it can be changed into another prime (4428169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2214069 + 2214070.

It is an arithmetic number, because the mean of its divisors is an integer number (2214070).

Almost surely, 2^4428139 is an apocalyptic number.

4428139 is a deficient number, since it is larger than the sum of its proper divisors (1).

4428139 is an equidigital number, since it uses as much as digits as its factorization.

4428139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 4428139 is about 2104.3143776537. The cubic root of 4428139 is about 164.2128284844.

The spelling of 4428139 in words is "four million, four hundred twenty-eight thousand, one hundred thirty-nine".