8889621 has 16 divisors (see below), whose sum is σ = 12894336. Its totient is φ = 5414976.

The previous prime is 8889607. The next prime is 8889659. The reversal of 8889621 is 1269888.

It is not a de Polignac number, because 8889621 - 2⁶ = 8889557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8889821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2911 + ... + 5123.

It is an arithmetic number, because the mean of its divisors is an integer number (805896).

Almost surely, 2^8889621 is an apocalyptic number.

It is an amenable number.

8889621 is a deficient number, since it is larger than the sum of its proper divisors (4004715).

8889621 is a wasteful number, since it uses less digits than its factorization.

8889621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332.

The product of its digits is 55296, while the sum is 42.

The square root of 8889621 is about 2981.5467462376. The cubic root of 8889621 is about 207.1545206727.

The spelling of 8889621 in words is "eight million, eight hundred eighty-nine thousand, six hundred twenty-one".