13824889 has 4 divisors (see below), whose sum is σ = 14888356. Its totient is φ = 12761424.

The previous prime is 13824841. The next prime is 13824901. The reversal of 13824889 is 98842831.

13824889 is digitally balanced in base 3, 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: 98842831 = 1259 ⋅78509.

It can be written as a sum of positive squares in 2 ways, for example, as 2822400 + 11002489 = 1680^2 + 3317^2 .

It is not a de Polignac number, because 13824889 - 2¹³ = 13816697 is a prime.

It is a super-2 number, since 2×13824889² = 382255111724642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13824809) 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, 531714 + ... + 531739.

It is an arithmetic number, because the mean of its divisors is an integer number (3722089).

Almost surely, 2^13824889 is an apocalyptic number.

It is an amenable number.

13824889 is a deficient number, since it is larger than the sum of its proper divisors (1063467).

13824889 is a wasteful number, since it uses less digits than its factorization.

13824889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063466.

The product of its digits is 110592, while the sum is 43.

The square root of 13824889 is about 3718.1835619022. The cubic root of 13824889 is about 240.0051445656.

The spelling of 13824889 in words is "thirteen million, eight hundred twenty-four thousand, eight hundred eighty-nine".