13459891 has 2 divisors, whose sum is σ = 13459892. Its totient is φ = 13459890.

The previous prime is 13459889. The next prime is 13459951. The reversal of 13459891 is 19895431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13459891 - 2¹ = 13459889 is a prime.

Together with 13459889, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13459871) 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, 6729945 + 6729946.

It is an arithmetic number, because the mean of its divisors is an integer number (6729946).

Almost surely, 2^13459891 is an apocalyptic number.

13459891 is a deficient number, since it is larger than the sum of its proper divisors (1).

13459891 is an equidigital number, since it uses as much as digits as its factorization.

13459891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 40.

The square root of 13459891 is about 3668.7724104937. The cubic root of 13459891 is about 237.8741125083.

It can be divided in two parts, 134598 and 91, that added together give a square (134689 = 367²).

The spelling of 13459891 in words is "thirteen million, four hundred fifty-nine thousand, eight hundred ninety-one".