16119889 has 2 divisors, whose sum is σ = 16119890. Its totient is φ = 16119888.

The previous prime is 16119881. The next prime is 16119913. The reversal of 16119889 is 98891161.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8363664 + 7756225 = 2892^2 + 2785^2 .

It is an emirp because it is prime and its reverse (98891161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16119889 - 2³ = 16119881 is a prime.

It is not a weakly prime, because it can be changed into another prime (16119881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8059944 + 8059945.

It is an arithmetic number, because the mean of its divisors is an integer number (8059945).

Almost surely, 2^16119889 is an apocalyptic number.

It is an amenable number.

16119889 is a deficient number, since it is larger than the sum of its proper divisors (1).

16119889 is an equidigital number, since it uses as much as digits as its factorization.

16119889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 43.

The square root of 16119889 is about 4014.9581566935. The cubic root of 16119889 is about 252.6120223127.

The spelling of 16119889 in words is "sixteen million, one hundred nineteen thousand, eight hundred eighty-nine".