197387447 has 8 divisors (see below), whose sum is σ = 214479360. Its totient is φ = 180965880.

The previous prime is 197387429. The next prime is 197387453. The reversal of 197387447 is 744783791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 197387447 - 2¹⁴ = 197371063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197387395 and 197387404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197387147) 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 7 ways as a sum of consecutive naturals, for example, 166973 + ... + 168150.

It is an arithmetic number, because the mean of its divisors is an integer number (26809920).

Almost surely, 2^197387447 is an apocalyptic number.

197387447 is a deficient number, since it is larger than the sum of its proper divisors (17091913).

197387447 is a wasteful number, since it uses less digits than its factorization.

197387447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335173.

The product of its digits is 1185408, while the sum is 50.

The square root of 197387447 is about 14049.4642958370. The cubic root of 197387447 is about 582.2459950957.

The spelling of 197387447 in words is "one hundred ninety-seven million, three hundred eighty-seven thousand, four hundred forty-seven".