197089469 has 2 divisors, whose sum is σ = 197089470. Its totient is φ = 197089468.

The previous prime is 197089447. The next prime is 197089493. The reversal of 197089469 is 964980791.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197065444 + 24025 = 14038^2 + 155^2 .

It is an emirp because it is prime and its reverse (964980791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197089469 - 2⁸ = 197089213 is a prime.

It is a super-2 number, since 2×197089469² = 77688517581403922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197089469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197089439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98544734 + 98544735.

It is an arithmetic number, because the mean of its divisors is an integer number (98544735).

Almost surely, 2^197089469 is an apocalyptic number.

It is an amenable number.

197089469 is a deficient number, since it is larger than the sum of its proper divisors (1).

197089469 is an equidigital number, since it uses as much as digits as its factorization.

197089469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 197089469 is about 14038.8556869853. The cubic root of 197089469 is about 581.9528594766.

The spelling of 197089469 in words is "one hundred ninety-seven million, eighty-nine thousand, four hundred sixty-nine".