4139389 has 2 divisors, whose sum is σ = 4139390. Its totient is φ = 4139388.

The previous prime is 4139383. The next prime is 4139417. The reversal of 4139389 is 9839314.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2295225 + 1844164 = 1515^2 + 1358^2 .

It is a cyclic number.

It is not a de Polignac number, because 4139389 - 2⁹ = 4138877 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4139383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2069694 + 2069695.

It is an arithmetic number, because the mean of its divisors is an integer number (2069695).

Almost surely, 2^4139389 is an apocalyptic number.

It is an amenable number.

4139389 is a deficient number, since it is larger than the sum of its proper divisors (1).

4139389 is an equidigital number, since it uses as much as digits as its factorization.

4139389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 4139389 is about 2034.5488443387. The cubic root of 4139389 is about 160.5629777147.

The spelling of 4139389 in words is "four million, one hundred thirty-nine thousand, three hundred eighty-nine".