197274947 has 2 divisors, whose sum is σ = 197274948. Its totient is φ = 197274946.

The previous prime is 197274941. The next prime is 197274949. The reversal of 197274947 is 749472791.

It is a strong prime.

It is an emirp because it is prime and its reverse (749472791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197274947 - 2²⁶ = 130166083 is a prime.

Together with 197274949, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 197274895 and 197274904.

It is not a weakly prime, because it can be changed into another prime (197274941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98637473 + 98637474.

It is an arithmetic number, because the mean of its divisors is an integer number (98637474).

Almost surely, 2^197274947 is an apocalyptic number.

197274947 is a deficient number, since it is larger than the sum of its proper divisors (1).

197274947 is an equidigital number, since it uses as much as digits as its factorization.

197274947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 50.

The square root of 197274947 is about 14045.4600138265. The cubic root of 197274947 is about 582.1353579981.

The spelling of 197274947 in words is "one hundred ninety-seven million, two hundred seventy-four thousand, nine hundred forty-seven".