4094809 has 2 divisors, whose sum is σ = 4094810. Its totient is φ = 4094808.

The previous prime is 4094791. The next prime is 4094813. The reversal of 4094809 is 9084904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3459600 + 635209 = 1860^2 + 797^2 .

It is a cyclic number.

It is not a de Polignac number, because 4094809 - 2⁷ = 4094681 is a prime.

It is not a weakly prime, because it can be changed into another prime (4094819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2047404 + 2047405.

It is an arithmetic number, because the mean of its divisors is an integer number (2047405).

Almost surely, 2^4094809 is an apocalyptic number.

It is an amenable number.

4094809 is a deficient number, since it is larger than the sum of its proper divisors (1).

4094809 is an equidigital number, since it uses as much as digits as its factorization.

4094809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 4094809 is about 2023.5634410613. The cubic root of 4094809 is about 159.9844906842.

Subtracting from 4094809 its product of nonzero digits (10368), we obtain a square (4084441 = 2021²).

It can be divided in two parts, 40 and 94809, that added together give a palindrome (94849).

The spelling of 4094809 in words is "four million, ninety-four thousand, eight hundred nine".