197084869 has 2 divisors, whose sum is σ = 197084870. Its totient is φ = 197084868.

The previous prime is 197084843. The next prime is 197084873. The reversal of 197084869 is 968480791.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174636225 + 22448644 = 13215^2 + 4738^2 .

It is a cyclic number.

It is not a de Polignac number, because 197084869 - 2⁹ = 197084357 is a prime.

It is a super-2 number, since 2×197084869² = 77684891177494322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197088869) 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, 98542434 + 98542435.

It is an arithmetic number, because the mean of its divisors is an integer number (98542435).

Almost surely, 2^197084869 is an apocalyptic number.

It is an amenable number.

197084869 is a deficient number, since it is larger than the sum of its proper divisors (1).

197084869 is an equidigital number, since it uses as much as digits as its factorization.

197084869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 197084869 is about 14038.6918550127. The cubic root of 197084869 is about 581.9483319153.

The spelling of 197084869 in words is "one hundred ninety-seven million, eighty-four thousand, eight hundred sixty-nine".