197885447 has 2 divisors, whose sum is σ = 197885448. Its totient is φ = 197885446.

The previous prime is 197885383. The next prime is 197885453. The reversal of 197885447 is 744588791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197885447 - 2⁶ = 197885383 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197885477) 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 as a sum of consecutive naturals, namely, 98942723 + 98942724.

It is an arithmetic number, because the mean of its divisors is an integer number (98942724).

Almost surely, 2^197885447 is an apocalyptic number.

197885447 is a deficient number, since it is larger than the sum of its proper divisors (1).

197885447 is an equidigital number, since it uses as much as digits as its factorization.

197885447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2257920, while the sum is 53.

The square root of 197885447 is about 14067.1762269476. The cubic root of 197885447 is about 582.7352443704.

The spelling of 197885447 in words is "one hundred ninety-seven million, eight hundred eighty-five thousand, four hundred forty-seven".