197044009 has 8 divisors (see below), whose sum is σ = 206633160. Its totient is φ = 187641216.

The previous prime is 197043989. The next prime is 197044027. The reversal of 197044009 is 900440791.

It can be written as a sum of positive squares in 4 ways, for example, as 11539609 + 185504400 = 3397^2 + 13620^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 197044009 - 2¹⁹ = 196519721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197044049) 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 in 7 ways as a sum of consecutive naturals, for example, 44422 + ... + 48655.

It is an arithmetic number, because the mean of its divisors is an integer number (25829145).

Almost surely, 2^197044009 is an apocalyptic number.

It is an amenable number.

197044009 is a deficient number, since it is larger than the sum of its proper divisors (9589151).

197044009 is an equidigital number, since it uses as much as digits as its factorization.

197044009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93179.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 197044009 is about 14037.2365157819. The cubic root of 197044009 is about 581.9081122671.

The spelling of 197044009 in words is "one hundred ninety-seven million, forty-four thousand, nine".