4089871 has 2 divisors, whose sum is σ = 4089872. Its totient is φ = 4089870.

The previous prime is 4089853. The next prime is 4089887. The reversal of 4089871 is 1789804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4089871 - 2¹⁵ = 4057103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4089871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4089271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2044935 + 2044936.

It is an arithmetic number, because the mean of its divisors is an integer number (2044936).

Almost surely, 2^4089871 is an apocalyptic number.

4089871 is a deficient number, since it is larger than the sum of its proper divisors (1).

4089871 is an equidigital number, since it uses as much as digits as its factorization.

4089871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 4089871 is about 2022.3429481668. The cubic root of 4089871 is about 159.9201554745.

The spelling of 4089871 in words is "four million, eighty-nine thousand, eight hundred seventy-one".