13889019 has 16 divisors (see below), whose sum is σ = 19644800. Its totient is φ = 8703936.

The previous prime is 13888997. The next prime is 13889027. The reversal of 13889019 is 91098831.

It is a happy number.

13889019 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13889019 - 2¹⁵ = 13856251 is a prime.

It is a super-2 number, since 2×13889019² = 385809697564722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13889039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7047 + ... + 8799.

It is an arithmetic number, because the mean of its divisors is an integer number (1227800).

Almost surely, 2^13889019 is an apocalyptic number.

13889019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13889019 is a deficient number, since it is larger than the sum of its proper divisors (5755781).

13889019 is a wasteful number, since it uses less digits than its factorization.

13889019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 13889019 is about 3726.7974186961. The cubic root of 13889019 is about 240.3756789930.

The spelling of 13889019 in words is "thirteen million, eight hundred eighty-nine thousand, nineteen".