2193897 has 4 divisors (see below), whose sum is σ = 2925200. Its totient is φ = 1462596.

The previous prime is 2193889. The next prime is 2193929. The reversal of 2193897 is 7983912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2193897 - 2³ = 2193889 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2193827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365647 + ... + 365652.

It is an arithmetic number, because the mean of its divisors is an integer number (731300).

2^2193897 is an apocalyptic number.

It is an amenable number.

2193897 is a deficient number, since it is larger than the sum of its proper divisors (731303).

2193897 is an equidigital number, since it uses as much as digits as its factorization.

2193897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731302.

The product of its digits is 27216, while the sum is 39.

The square root of 2193897 is about 1481.1809477576. The cubic root of 2193897 is about 129.9387680075.

The spelling of 2193897 in words is "two million, one hundred ninety-three thousand, eight hundred ninety-seven".