2166469 has 4 divisors (see below), whose sum is σ = 2216896. Its totient is φ = 2116044.

The previous prime is 2166467. The next prime is 2166509. The reversal of 2166469 is 9646612.

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 not a de Polignac number, because 2166469 - 2¹ = 2166467 is a prime.

It is a super-2 number, since 2×2166469² = 9387175855922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166467) 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, 25149 + ... + 25234.

It is an arithmetic number, because the mean of its divisors is an integer number (554224).

2^2166469 is an apocalyptic number.

It is an amenable number.

2166469 is a deficient number, since it is larger than the sum of its proper divisors (50427).

2166469 is an equidigital number, since it uses as much as digits as its factorization.

2166469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50426.

The product of its digits is 15552, while the sum is 34.

The square root of 2166469 is about 1471.8929988284. The cubic root of 2166469 is about 129.3949994365.

The spelling of 2166469 in words is "two million, one hundred sixty-six thousand, four hundred sixty-nine".