4068809 has 4 divisors (see below), whose sum is σ = 4108416. Its totient is φ = 4029204.

The previous prime is 4068751. The next prime is 4068811. The reversal of 4068809 is 9088604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4068809 - 2¹⁶ = 4003273 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (4068829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19649 + ... + 19854.

It is an arithmetic number, because the mean of its divisors is an integer number (1027104).

Almost surely, 2^4068809 is an apocalyptic number.

It is an amenable number.

4068809 is a deficient number, since it is larger than the sum of its proper divisors (39607).

4068809 is a wasteful number, since it uses less digits than its factorization.

4068809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39606.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 4068809 is about 2017.1289001945. The cubic root of 4068809 is about 159.6451641747.

The spelling of 4068809 in words is "four million, sixty-eight thousand, eight hundred nine".