197399 has 4 divisors (see below), whose sum is σ = 199320. Its totient is φ = 195480.

The previous prime is 197389. The next prime is 197419. The reversal of 197399 is 993791.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993791 = 587 ⋅1693.

It is a cyclic number.

It is not a de Polignac number, because 197399 - 2⁴ = 197383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197339) 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, 797 + ... + 1014.

It is an arithmetic number, because the mean of its divisors is an integer number (49830).

2¹⁹⁷³⁹⁹ is an apocalyptic number.

197399 is a deficient number, since it is larger than the sum of its proper divisors (1921).

197399 is a wasteful number, since it uses less digits than its factorization.

197399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920.

The product of its digits is 15309, while the sum is 38.

The square root of 197399 is about 444.2960724562. The cubic root of 197399 is about 58.2257354408.

The spelling of 197399 in words is "one hundred ninety-seven thousand, three hundred ninety-nine".