197294609 has 4 divisors (see below), whose sum is σ = 197329920. Its totient is φ = 197259300.

The previous prime is 197294597. The next prime is 197294611. The reversal of 197294609 is 906492791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 906492791 = 233 ⋅3890527.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197294609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197290609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7217 + ... + 21134.

It is an arithmetic number, because the mean of its divisors is an integer number (49332480).

Almost surely, 2^197294609 is an apocalyptic number.

It is an amenable number.

197294609 is a deficient number, since it is larger than the sum of its proper divisors (35311).

197294609 is an equidigital number, since it uses as much as digits as its factorization.

197294609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35310.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 197294609 is about 14046.1599378620. The cubic root of 197294609 is about 582.1546974452.

The spelling of 197294609 in words is "one hundred ninety-seven million, two hundred ninety-four thousand, six hundred nine".