9780197 has 8 divisors (see below), whose sum is σ = 11219136. Its totient is φ = 8351712.

The previous prime is 9780187. The next prime is 9780203. The reversal of 9780197 is 7910879.

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 9780197 - 2⁸ = 9779941 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 (9780137) 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, 488 + ... + 4449.

It is an arithmetic number, because the mean of its divisors is an integer number (1402392).

Almost surely, 2^9780197 is an apocalyptic number.

It is an amenable number.

9780197 is a deficient number, since it is larger than the sum of its proper divisors (1438939).

9780197 is a wasteful number, since it uses less digits than its factorization.

9780197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5227.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 9780197 is about 3127.3306508906. The cubic root of 9780197 is about 213.8532563144.

The spelling of 9780197 in words is "nine million, seven hundred eighty thousand, one hundred ninety-seven".