4069439 has 8 divisors (see below), whose sum is σ = 4673280. Its totient is φ = 3504600.

The previous prime is 4069433. The next prime is 4069451. The reversal of 4069439 is 9349604.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-4069439 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 4069399 and 4069408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4069433) 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 7 ways as a sum of consecutive naturals, for example, 9527 + ... + 9944.

It is an arithmetic number, because the mean of its divisors is an integer number (584160).

Almost surely, 2^4069439 is an apocalyptic number.

4069439 is a deficient number, since it is larger than the sum of its proper divisors (603841).

4069439 is a wasteful number, since it uses less digits than its factorization.

4069439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19501.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 4069439 is about 2017.2850567037. The cubic root of 4069439 is about 159.6534033804.

The spelling of 4069439 in words is "four million, sixty-nine thousand, four hundred thirty-nine".