8869643 has 4 divisors (see below), whose sum is σ = 8888640. Its totient is φ = 8850648.

The previous prime is 8869633. The next prime is 8869649. The reversal of 8869643 is 3469688.

8869643 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 is a cyclic number.

It is not a de Polignac number, because 8869643 - 2⁶ = 8869579 is a prime.

It is a super-3 number, since 3×8869643³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8869594 and 8869603.

It is not an unprimeable number, because it can be changed into a prime (8869649) 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, 8780 + ... + 9737.

It is an arithmetic number, because the mean of its divisors is an integer number (2222160).

Almost surely, 2^8869643 is an apocalyptic number.

8869643 is a deficient number, since it is larger than the sum of its proper divisors (18997).

8869643 is a wasteful number, since it uses less digits than its factorization.

8869643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18996.

The product of its digits is 248832, while the sum is 44.

The square root of 8869643 is about 2978.1945873297. The cubic root of 8869643 is about 206.9992220715. Note that the first 3 decimals are identical.

The spelling of 8869643 in words is "eight million, eight hundred sixty-nine thousand, six hundred forty-three".