197040109 has 8 divisors (see below), whose sum is σ = 225587648. Its totient is φ = 168592320.

The previous prime is 197040097. The next prime is 197040131. The reversal of 197040109 is 901040791.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197040109 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 (197040139) 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, 20652 + ... + 28645.

It is an arithmetic number, because the mean of its divisors is an integer number (28198456).

Almost surely, 2^197040109 is an apocalyptic number.

It is an amenable number.

197040109 is a deficient number, since it is larger than the sum of its proper divisors (28547539).

197040109 is an equidigital number, since it uses as much as digits as its factorization.

197040109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49875.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 197040109 is about 14037.0975988628. The cubic root of 197040109 is about 581.9042730966.

The spelling of 197040109 in words is "one hundred ninety-seven million, forty thousand, one hundred nine".