2194487 has 2 divisors, whose sum is σ = 2194488. Its totient is φ = 2194486.

The previous prime is 2194471. The next prime is 2194501. The reversal of 2194487 is 7844912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2194487 - 2⁴ = 2194471 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2194417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097243 + 1097244.

It is an arithmetic number, because the mean of its divisors is an integer number (1097244).

2^2194487 is an apocalyptic number.

2194487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194487 is an equidigital number, since it uses as much as digits as its factorization.

2194487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The square root of 2194487 is about 1481.3800997718. The cubic root of 2194487 is about 129.9504150146.

The spelling of 2194487 in words is "two million, one hundred ninety-four thousand, four hundred eighty-seven".