2197993 has 12 divisors (see below), whose sum is σ = 2641152. Its totient is φ = 1821960.

The previous prime is 2197973. The next prime is 2198003. The reversal of 2197993 is 3997912.

It is not a de Polignac number, because 2197993 - 2⁵ = 2197961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2197933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 796 + ... + 2242.

It is an arithmetic number, because the mean of its divisors is an integer number (220096).

2^2197993 is an apocalyptic number.

It is an amenable number.

2197993 is a deficient number, since it is larger than the sum of its proper divisors (443159).

2197993 is a wasteful number, since it uses less digits than its factorization.

2197993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492 (or 1485 counting only the distinct ones).

The product of its digits is 30618, while the sum is 40.

The square root of 2197993 is about 1482.5629834850. The cubic root of 2197993 is about 130.0195828488.

The spelling of 2197993 in words is "two million, one hundred ninety-seven thousand, nine hundred ninety-three".