2135889 has 20 divisors (see below), whose sum is σ = 3647424. Its totient is φ = 1220184.

The previous prime is 2135857. The next prime is 2135891. The reversal of 2135889 is 9885312.

It is not a de Polignac number, because 2135889 - 2⁵ = 2135857 is a prime.

2135889 is a lucky number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (2135689) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1317 + ... + 2450.

2^2135889 is an apocalyptic number.

It is an amenable number.

2135889 is a deficient number, since it is larger than the sum of its proper divisors (1511535).

2135889 is an equidigital number, since it uses as much as digits as its factorization.

2135889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786 (or 3777 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 2135889 is about 1461.4680974965. The cubic root of 2135889 is about 128.7833030386.

The spelling of 2135889 in words is "two million, one hundred thirty-five thousand, eight hundred eighty-nine".