13820089 has 4 divisors (see below), whose sum is σ = 13833460. Its totient is φ = 13806720.

The previous prime is 13820083. The next prime is 13820111. The reversal of 13820089 is 98002831.

13820089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98002831 = 83 ⋅1180757.

It can be written as a sum of positive squares in 2 ways, for example, as 2226064 + 11594025 = 1492^2 + 3405^2 .

It is a cyclic number.

It is not a de Polignac number, because 13820089 - 2⁹ = 13819577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13820089.

It is not an unprimeable number, because it can be changed into a prime (13820083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4992 + ... + 7249.

It is an arithmetic number, because the mean of its divisors is an integer number (3458365).

Almost surely, 2^13820089 is an apocalyptic number.

It is an amenable number.

13820089 is a deficient number, since it is larger than the sum of its proper divisors (13371).

13820089 is a wasteful number, since it uses less digits than its factorization.

13820089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13370.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 13820089 is about 3717.5380293953. The cubic root of 13820089 is about 239.9773647634.

The spelling of 13820089 in words is "thirteen million, eight hundred twenty thousand, eighty-nine".