2100889 has 8 divisors (see below), whose sum is σ = 2505600. Its totient is φ = 1722336.

The previous prime is 2100869. The next prime is 2100893. The reversal of 2100889 is 9880012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2100889 - 2⁹ = 2100377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6364 + ... + 6685.

It is an arithmetic number, because the mean of its divisors is an integer number (313200).

2^2100889 is an apocalyptic number.

It is an amenable number.

2100889 is a deficient number, since it is larger than the sum of its proper divisors (404711).

2100889 is a wasteful number, since it uses less digits than its factorization.

2100889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13079.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 2100889 is about 1449.4443763042. Note that the first 3 decimals coincide. The cubic root of 2100889 is about 128.0759843443.

The spelling of 2100889 in words is "two million, one hundred thousand, eight hundred eighty-nine".