20389119 has 16 divisors (see below), whose sum is σ = 27780192. Its totient is φ = 13298688.

The previous prime is 20389111. The next prime is 20389129. The reversal of 20389119 is 91198302.

It is not a de Polignac number, because 20389119 - 2³ = 20389111 is a prime.

It is a super-2 number, since 2×20389119² = 831432347192322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20389119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20389111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34087 + ... + 34679.

It is an arithmetic number, because the mean of its divisors is an integer number (1736262).

Almost surely, 2^20389119 is an apocalyptic number.

20389119 is a deficient number, since it is larger than the sum of its proper divisors (7391073).

20389119 is a wasteful number, since it uses less digits than its factorization.

20389119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 20389119 is about 4515.4312086444. The cubic root of 20389119 is about 273.1908526042.

The spelling of 20389119 in words is "twenty million, three hundred eighty-nine thousand, one hundred nineteen".