4008869 has 2 divisors, whose sum is σ = 4008870. Its totient is φ = 4008868.

The previous prime is 4008853. The next prime is 4008881. The reversal of 4008869 is 9688004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3940225 + 68644 = 1985^2 + 262^2 .

It is a cyclic number.

It is not a de Polignac number, because 4008869 - 2⁴ = 4008853 is a prime.

It is a super-2 number, since 2×4008869² = 32142061318322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4008769) 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 as a sum of consecutive naturals, namely, 2004434 + 2004435.

It is an arithmetic number, because the mean of its divisors is an integer number (2004435).

Almost surely, 2^4008869 is an apocalyptic number.

It is an amenable number.

4008869 is a deficient number, since it is larger than the sum of its proper divisors (1).

4008869 is an equidigital number, since it uses as much as digits as its factorization.

4008869 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4008869 is about 2002.2160223113. The cubic root of 4008869 is about 158.8573407587.

The spelling of 4008869 in words is "four million, eight thousand, eight hundred sixty-nine".