19796889 has 8 divisors (see below), whose sum is σ = 30166720. Its totient is φ = 11312496.

The previous prime is 19796873. The next prime is 19796923. The reversal of 19796889 is 98869791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19796889 - 2⁴ = 19796873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19796869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471334 + ... + 471375.

It is an arithmetic number, because the mean of its divisors is an integer number (3770840).

Almost surely, 2^19796889 is an apocalyptic number.

It is an amenable number.

19796889 is a deficient number, since it is larger than the sum of its proper divisors (10369831).

19796889 is an equidigital number, since it uses as much as digits as its factorization.

19796889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942719.

The product of its digits is 1959552, while the sum is 57.

The square root of 19796889 is about 4449.3695058963. The cubic root of 19796889 is about 270.5197532848.

The spelling of 19796889 in words is "nineteen million, seven hundred ninety-six thousand, eight hundred eighty-nine".