197899 has 6 divisors (see below), whose sum is σ = 214476. Its totient is φ = 182520.

The previous prime is 197893. The next prime is 197909. The reversal of 197899 is 998791.

It is not a de Polignac number, because 197899 - 2³ = 197891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 417 + ... + 754.

It is an arithmetic number, because the mean of its divisors is an integer number (35746).

2¹⁹⁷⁸⁹⁹ is an apocalyptic number.

197899 is a deficient number, since it is larger than the sum of its proper divisors (16577).

197899 is a wasteful number, since it uses less digits than its factorization.

197899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1197 (or 1184 counting only the distinct ones).

The product of its digits is 40824, while the sum is 43.

The square root of 197899 is about 444.8584044390. The cubic root of 197899 is about 58.2748547741.

The spelling of 197899 in words is "one hundred ninety-seven thousand, eight hundred ninety-nine".