4071439 has 2 divisors, whose sum is σ = 4071440. Its totient is φ = 4071438.

The previous prime is 4071433. The next prime is 4071451. The reversal of 4071439 is 9341704.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4071439 - 2¹⁷ = 3940367 is a prime.

4071439 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4071433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2035719 + 2035720.

It is an arithmetic number, because the mean of its divisors is an integer number (2035720).

Almost surely, 2^4071439 is an apocalyptic number.

4071439 is a deficient number, since it is larger than the sum of its proper divisors (1).

4071439 is an equidigital number, since it uses as much as digits as its factorization.

4071439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 4071439 is about 2017.7807115740. The cubic root of 4071439 is about 159.6795539555.

The spelling of 4071439 in words is "four million, seventy-one thousand, four hundred thirty-nine".