2197899 has 18 divisors (see below), whose sum is σ = 3486756. Its totient is φ = 1323120.

The previous prime is 2197873. The next prime is 2197907. The reversal of 2197899 is 9987912.

It is not a de Polignac number, because 2197899 - 2⁷ = 2197771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2197849) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14677 + ... + 14825.

2^2197899 is an apocalyptic number.

2197899 is a deficient number, since it is larger than the sum of its proper divisors (1288857).

2197899 is a wasteful number, since it uses less digits than its factorization.

2197899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 163 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 2197899 is about 1482.5312812889. The cubic root of 2197899 is about 130.0177293374.

It can be divided in two parts, 219 and 7899, that added together give a palindrome (8118).

The spelling of 2197899 in words is "two million, one hundred ninety-seven thousand, eight hundred ninety-nine".