13864489 has 4 divisors (see below), whose sum is σ = 13922260. Its totient is φ = 13806720.

The previous prime is 13864481. The next prime is 13864531. The reversal of 13864489 is 98446831.

13864489 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.

It can be written as a sum of positive squares in 2 ways, for example, as 11108889 + 2755600 = 3333^2 + 1660^2 .

It is a cyclic number.

It is not a de Polignac number, because 13864489 - 2³ = 13864481 is a prime.

It is a super-2 number, since 2×13864489² = 384448110462242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13864481) 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, 28524 + ... + 29005.

It is an arithmetic number, because the mean of its divisors is an integer number (3480565).

Almost surely, 2^13864489 is an apocalyptic number.

It is an amenable number.

13864489 is a deficient number, since it is larger than the sum of its proper divisors (57771).

13864489 is an equidigital number, since it uses as much as digits as its factorization.

13864489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57770.

The product of its digits is 165888, while the sum is 43.

The square root of 13864489 is about 3723.5049348698. The cubic root of 13864489 is about 240.2340829566.

The spelling of 13864489 in words is "thirteen million, eight hundred sixty-four thousand, four hundred eighty-nine".