11997893 has 2 divisors, whose sum is σ = 11997894. Its totient is φ = 11997892.

The previous prime is 11997877. The next prime is 11997901. The reversal of 11997893 is 39879911.

It is a happy number.

11997893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9972964 + 2024929 = 3158^2 + 1423^2 .

It is a cyclic number.

It is not a de Polignac number, because 11997893 - 2⁴ = 11997877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11997863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5998946 + 5998947.

It is an arithmetic number, because the mean of its divisors is an integer number (5998947).

Almost surely, 2^11997893 is an apocalyptic number.

It is an amenable number.

11997893 is a deficient number, since it is larger than the sum of its proper divisors (1).

11997893 is an equidigital number, since it uses as much as digits as its factorization.

11997893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 47.

The square root of 11997893 is about 3463.7974825327. The cubic root of 11997893 is about 228.9294482102.

The spelling of 11997893 in words is "eleven million, nine hundred ninety-seven thousand, eight hundred ninety-three".