2189461 has 2 divisors, whose sum is σ = 2189462. Its totient is φ = 2189460.

The previous prime is 2189459. The next prime is 2189477. The reversal of 2189461 is 1649812.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2160900 + 28561 = 1470^2 + 169^2 .

It is a cyclic number.

It is not a de Polignac number, because 2189461 - 2¹ = 2189459 is a prime.

Together with 2189459, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2189491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094730 + 1094731.

It is an arithmetic number, because the mean of its divisors is an integer number (1094731).

2^2189461 is an apocalyptic number.

It is an amenable number.

2189461 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189461 is an equidigital number, since it uses as much as digits as its factorization.

2189461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 31.

The square root of 2189461 is about 1479.6827362648. The cubic root of 2189461 is about 129.8511313643.

The spelling of 2189461 in words is "two million, one hundred eighty-nine thousand, four hundred sixty-one".