19989122 has 8 divisors (see below), whose sum is σ = 30202956. Its totient is φ = 9921472.

The previous prime is 19989113. The next prime is 19989131. The reversal of 19989122 is 22198991.

It is an interprime number because it is at equal distance from previous prime (19989113) and next prime (19989131).

It can be written as a sum of positive squares in 2 ways, for example, as 19971961 + 17161 = 4469^2 + 131^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 19989122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36203 + ... + 36750.

Almost surely, 2^19989122 is an apocalyptic number.

19989122 is a deficient number, since it is larger than the sum of its proper divisors (10213834).

19989122 is a wasteful number, since it uses less digits than its factorization.

19989122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73092.

The product of its digits is 23328, while the sum is 41.

The square root of 19989122 is about 4470.9195922092. The cubic root of 19989122 is about 271.3925403432.

The spelling of 19989122 in words is "nineteen million, nine hundred eighty-nine thousand, one hundred twenty-two".