197000909 has 8 divisors (see below), whose sum is σ = 225335808. Its totient is φ = 168714000.

The previous prime is 197000899. The next prime is 197000927. The reversal of 197000909 is 909000791.

It is a happy number.

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

It is not a de Polignac number, because 197000909 - 2⁴ = 197000893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197000959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2717 + ... + 20034.

It is an arithmetic number, because the mean of its divisors is an integer number (28166976).

Almost surely, 2^197000909 is an apocalyptic number.

It is an amenable number.

197000909 is a deficient number, since it is larger than the sum of its proper divisors (28334899).

197000909 is a wasteful number, since it uses less digits than its factorization.

197000909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23995.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 197000909 is about 14035.7012293651. The cubic root of 197000909 is about 581.8656816977.

The spelling of 197000909 in words is "one hundred ninety-seven million, nine hundred nine", and thus it is an aban number.