11719889 has 2 divisors, whose sum is σ = 11719890. Its totient is φ = 11719888.

The previous prime is 11719867. The next prime is 11719901. The reversal of 11719889 is 98891711.

11719889 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., 10029889 + 1690000 = 3167^2 + 1300^2 .

It is a cyclic number.

It is not a de Polignac number, because 11719889 - 2⁸ = 11719633 is a prime.

It is not a weakly prime, because it can be changed into another prime (11719859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5859944 + 5859945.

It is an arithmetic number, because the mean of its divisors is an integer number (5859945).

Almost surely, 2^11719889 is an apocalyptic number.

It is an amenable number.

11719889 is a deficient number, since it is larger than the sum of its proper divisors (1).

11719889 is an equidigital number, since it uses as much as digits as its factorization.

11719889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 44.

The square root of 11719889 is about 3423.4323419633. The cubic root of 11719889 is about 227.1474328002.

The spelling of 11719889 in words is "eleven million, seven hundred nineteen thousand, eight hundred eighty-nine".