5809891 has 2 divisors, whose sum is σ = 5809892. Its totient is φ = 5809890.

The previous prime is 5809883. The next prime is 5809931. The reversal of 5809891 is 1989085.

It is an a-pointer prime, because the next prime (5809931) can be obtained adding 5809891 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5809891 - 2³ = 5809883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5809861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2904945 + 2904946.

It is an arithmetic number, because the mean of its divisors is an integer number (2904946).

Almost surely, 2^5809891 is an apocalyptic number.

5809891 is a deficient number, since it is larger than the sum of its proper divisors (1).

5809891 is an equidigital number, since it uses as much as digits as its factorization.

5809891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 5809891 is about 2410.3715481228. The cubic root of 5809891 is about 179.7722531147.

The spelling of 5809891 in words is "five million, eight hundred nine thousand, eight hundred ninety-one".