19989339 has 8 divisors (see below), whose sum is σ = 26744592. Its totient is φ = 13280160.

The previous prime is 19989337. The next prime is 19989341. The reversal of 19989339 is 93398991.

It is an interprime number because it is at equal distance from previous prime (19989337) and next prime (19989341).

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

It is not a de Polignac number, because 19989339 - 2¹ = 19989337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19989291 and 19989300.

It is not an unprimeable number, because it can be changed into a prime (19989337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10492 + ... + 12249.

It is an arithmetic number, because the mean of its divisors is an integer number (3343074).

Almost surely, 2^19989339 is an apocalyptic number.

19989339 is a deficient number, since it is larger than the sum of its proper divisors (6755253).

19989339 is a wasteful number, since it uses less digits than its factorization.

19989339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23037.

The product of its digits is 472392, while the sum is 51.

The square root of 19989339 is about 4470.9438600814. The cubic root of 19989339 is about 271.3935224101.

The spelling of 19989339 in words is "nineteen million, nine hundred eighty-nine thousand, three hundred thirty-nine".