2194403 has 2 divisors, whose sum is σ = 2194404. Its totient is φ = 2194402.

The previous prime is 2194391. The next prime is 2194417. The reversal of 2194403 is 3044912.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2194403 is a prime.

It is a plaindrome in base 12.

It is not a weakly prime, because it can be changed into another prime (2194903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097201 + 1097202.

It is an arithmetic number, because the mean of its divisors is an integer number (1097202).

2^2194403 is an apocalyptic number.

2194403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194403 is an equidigital number, since it uses as much as digits as its factorization.

2194403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2194403 is about 1481.3517475603. The cubic root of 2194403 is about 129.9487569241.

The spelling of 2194403 in words is "two million, one hundred ninety-four thousand, four hundred three".