2184869 has 2 divisors, whose sum is σ = 2184870. Its totient is φ = 2184868.

The previous prime is 2184863. The next prime is 2184877. The reversal of 2184869 is 9684812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2102500 + 82369 = 1450^2 + 287^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2184869 is a prime.

It is a super-2 number, since 2×2184869² = 9547305094322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2184863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1092434 + 1092435.

It is an arithmetic number, because the mean of its divisors is an integer number (1092435).

2^2184869 is an apocalyptic number.

It is an amenable number.

2184869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2184869 is an equidigital number, since it uses as much as digits as its factorization.

2184869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 38.

The square root of 2184869 is about 1478.1302378343. The cubic root of 2184869 is about 129.7602880407.

The spelling of 2184869 in words is "two million, one hundred eighty-four thousand, eight hundred sixty-nine".