4140439 has 2 divisors, whose sum is σ = 4140440. Its totient is φ = 4140438.

The previous prime is 4140421. The next prime is 4140457. The reversal of 4140439 is 9340414.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (4140421) and next prime (4140457).

It is a cyclic number.

It is not a de Polignac number, because 4140439 - 2¹¹ = 4138391 is a prime.

It is a super-2 number, since 2×4140439² = 34286470225442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4140419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2070219 + 2070220.

It is an arithmetic number, because the mean of its divisors is an integer number (2070220).

Almost surely, 2^4140439 is an apocalyptic number.

4140439 is a deficient number, since it is larger than the sum of its proper divisors (1).

4140439 is an equidigital number, since it uses as much as digits as its factorization.

4140439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 4140439 is about 2034.8068704425. The cubic root of 4140439 is about 160.5765527354.

Subtracting from 4140439 its sum of digits (25), we obtain a palindrome (4140414).

The spelling of 4140439 in words is "four million, one hundred forty thousand, four hundred thirty-nine".