197324489 has 2 divisors, whose sum is σ = 197324490. Its totient is φ = 197324488.

The previous prime is 197324461. The next prime is 197324503. The reversal of 197324489 is 984423791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113784889 + 83539600 = 10667^2 + 9140^2 .

It is a cyclic number.

It is not a de Polignac number, because 197324489 - 2¹² = 197320393 is a prime.

It is a super-2 number, since 2×197324489² = 77873907918222242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (197324089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98662244 + 98662245.

It is an arithmetic number, because the mean of its divisors is an integer number (98662245).

Almost surely, 2^197324489 is an apocalyptic number.

It is an amenable number.

197324489 is a deficient number, since it is larger than the sum of its proper divisors (1).

197324489 is an equidigital number, since it uses as much as digits as its factorization.

197324489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 197324489 is about 14047.2235334959. The cubic root of 197324489 is about 582.1840848072.

It can be divided in two parts, 1973 and 24489, that added together give a palindrome (26462).

The spelling of 197324489 in words is "one hundred ninety-seven million, three hundred twenty-four thousand, four hundred eighty-nine".