2170289 has 4 divisors (see below), whose sum is σ = 2367600. Its totient is φ = 1972980.

The previous prime is 2170283. The next prime is 2170291. The reversal of 2170289 is 9820712.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2170289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2170283) 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, 98639 + ... + 98660.

It is an arithmetic number, because the mean of its divisors is an integer number (591900).

2^2170289 is an apocalyptic number.

It is an amenable number.

2170289 is a deficient number, since it is larger than the sum of its proper divisors (197311).

2170289 is a wasteful number, since it uses less digits than its factorization.

2170289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197310.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2170289 is about 1473.1900759916. The cubic root of 2170289 is about 129.4710061654.

The spelling of 2170289 in words is "two million, one hundred seventy thousand, two hundred eighty-nine".