197249 has 4 divisors (see below), whose sum is σ = 212436. Its totient is φ = 182064.

The previous prime is 197243. The next prime is 197257. The reversal of 197249 is 942791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 942791 = 457 ⋅2063.

It can be written as a sum of positive squares in 2 ways, for example, as 110224 + 87025 = 332^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 197249 - 2⁴ = 197233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7574 + ... + 7599.

It is an arithmetic number, because the mean of its divisors is an integer number (53109).

2¹⁹⁷²⁴⁹ is an apocalyptic number.

It is an amenable number.

197249 is a deficient number, since it is larger than the sum of its proper divisors (15187).

197249 is a wasteful number, since it uses less digits than its factorization.

197249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15186.

The product of its digits is 4536, while the sum is 32.

The square root of 197249 is about 444.1272340220. The cubic root of 197249 is about 58.2109834689.

It can be divided in two parts, 19 and 7249, that multiplied together give a palindrome (137731).

The spelling of 197249 in words is "one hundred ninety-seven thousand, two hundred forty-nine".