11897863 has 2 divisors, whose sum is σ = 11897864. Its totient is φ = 11897862.

The previous prime is 11897861. The next prime is 11897891. The reversal of 11897863 is 36879811.

It is a weak prime.

It is an emirp because it is prime and its reverse (36879811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11897863 - 2¹ = 11897861 is a prime.

Together with 11897861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11897861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5948931 + 5948932.

It is an arithmetic number, because the mean of its divisors is an integer number (5948932).

Almost surely, 2^11897863 is an apocalyptic number.

11897863 is a deficient number, since it is larger than the sum of its proper divisors (1).

11897863 is an equidigital number, since it uses as much as digits as its factorization.

11897863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 43.

The square root of 11897863 is about 3449.3279055491. The cubic root of 11897863 is about 228.2914542453.

The spelling of 11897863 in words is "eleven million, eight hundred ninety-seven thousand, eight hundred sixty-three".