5309891 has 2 divisors, whose sum is σ = 5309892. Its totient is φ = 5309890.

The previous prime is 5309861. The next prime is 5309903. The reversal of 5309891 is 1989035.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5309891 - 2¹⁴ = 5293507 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (5309851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2654945 + 2654946.

It is an arithmetic number, because the mean of its divisors is an integer number (2654946).

Almost surely, 2^5309891 is an apocalyptic number.

5309891 is a deficient number, since it is larger than the sum of its proper divisors (1).

5309891 is an equidigital number, since it uses as much as digits as its factorization.

5309891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 5309891 is about 2304.3200732537. The cubic root of 5309891 is about 174.4597324184.

The spelling of 5309891 in words is "five million, three hundred nine thousand, eight hundred ninety-one".