19896089 has 4 divisors (see below), whose sum is σ = 19906356. Its totient is φ = 19885824.

The previous prime is 19896083. The next prime is 19896109. The reversal of 19896089 is 98069891.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 12306064 + 7590025 = 3508^2 + 2755^2 .

It is a cyclic number.

It is not a de Polignac number, because 19896089 - 2¹⁶ = 19830553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19896083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1244 + ... + 6429.

It is an arithmetic number, because the mean of its divisors is an integer number (4976589).

Almost surely, 2^19896089 is an apocalyptic number.

It is an amenable number.

19896089 is a deficient number, since it is larger than the sum of its proper divisors (10267).

19896089 is an equidigital number, since it uses as much as digits as its factorization.

19896089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10266.

The product of its (nonzero) digits is 279936, while the sum is 50.

The square root of 19896089 is about 4460.5032227317. The cubic root of 19896089 is about 270.9708487500.

The spelling of 19896089 in words is "nineteen million, eight hundred ninety-six thousand, eighty-nine".