197963477 has 2 divisors, whose sum is σ = 197963478. Its totient is φ = 197963476.

The previous prime is 197963471. The next prime is 197963537. The reversal of 197963477 is 774369791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116079076 + 81884401 = 10774^2 + 9049^2 .

It is a cyclic number.

It is not a de Polignac number, because 197963477 - 2⁸ = 197963221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197963471) 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, 98981738 + 98981739.

It is an arithmetic number, because the mean of its divisors is an integer number (98981739).

Almost surely, 2^197963477 is an apocalyptic number.

It is an amenable number.

197963477 is a deficient number, since it is larger than the sum of its proper divisors (1).

197963477 is an equidigital number, since it uses as much as digits as its factorization.

197963477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2000376, while the sum is 53.

The square root of 197963477 is about 14069.9494313235. The cubic root of 197963477 is about 582.8118288396.

It can be divided in two parts, 1979 and 63477, that added together give a palindrome (65456).

The spelling of 197963477 in words is "one hundred ninety-seven million, nine hundred sixty-three thousand, four hundred seventy-seven".