889601621 has 4 divisors (see below), whose sum is σ = 889832652. Its totient is φ = 889370592.

The previous prime is 889601617. The next prime is 889601623. The reversal of 889601621 is 126106988.

889601621 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 653364721 + 236236900 = 25561^2 + 15370^2 .

It is a cyclic number.

It is not a de Polignac number, because 889601621 - 2² = 889601617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889601623) 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, 109640 + ... + 117473.

It is an arithmetic number, because the mean of its divisors is an integer number (222458163).

Almost surely, 2^889601621 is an apocalyptic number.

It is an amenable number.

889601621 is a deficient number, since it is larger than the sum of its proper divisors (231031).

889601621 is a wasteful number, since it uses less digits than its factorization.

889601621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231030.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 889601621 is about 29826.1901858082. The cubic root of 889601621 is about 961.7566292787.

The spelling of 889601621 in words is "eight hundred eighty-nine million, six hundred one thousand, six hundred twenty-one".