2193998 has 4 divisors (see below), whose sum is σ = 3291000. Its totient is φ = 1096998.

The previous prime is 2193979. The next prime is 2194013. The reversal of 2193998 is 8993912.

2193998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548498 + ... + 548501.

It is an arithmetic number, because the mean of its divisors is an integer number (822750).

2^2193998 is an apocalyptic number.

2193998 is a deficient number, since it is larger than the sum of its proper divisors (1097002).

2193998 is a wasteful number, since it uses less digits than its factorization.

2193998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097001.

The product of its digits is 34992, while the sum is 41.

The square root of 2193998 is about 1481.2150417816. The cubic root of 2193998 is about 129.9407619653.

The spelling of 2193998 in words is "two million, one hundred ninety-three thousand, nine hundred ninety-eight".