197323447 has 4 divisors (see below), whose sum is σ = 202136256. Its totient is φ = 192510640.

The previous prime is 197323433. The next prime is 197323457. The reversal of 197323447 is 744323791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744323791 = 131 ⋅5681861.

It is a cyclic number.

It is not a de Polignac number, because 197323447 - 2¹⁹ = 196799159 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197323457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2406343 + ... + 2406424.

It is an arithmetic number, because the mean of its divisors is an integer number (50534064).

Almost surely, 2^197323447 is an apocalyptic number.

197323447 is a deficient number, since it is larger than the sum of its proper divisors (4812809).

197323447 is an equidigital number, since it uses as much as digits as its factorization.

197323447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812808.

The product of its digits is 127008, while the sum is 40.

The square root of 197323447 is about 14047.1864442671. The cubic root of 197323447 is about 582.1830600368.

The spelling of 197323447 in words is "one hundred ninety-seven million, three hundred twenty-three thousand, four hundred forty-seven".