197809941 has 8 divisors (see below), whose sum is σ = 301424704. Its totient is φ = 113034240.

The previous prime is 197809921. The next prime is 197809951. The reversal of 197809941 is 149908791.

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

It is not a de Polignac number, because 197809941 - 2⁶ = 197809877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197809921) 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, 4709740 + ... + 4709781.

It is an arithmetic number, because the mean of its divisors is an integer number (37678088).

Almost surely, 2^197809941 is an apocalyptic number.

It is an amenable number.

197809941 is a deficient number, since it is larger than the sum of its proper divisors (103614763).

197809941 is an equidigital number, since it uses as much as digits as its factorization.

197809941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9419531.

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 197809941 is about 14064.4922055508. The cubic root of 197809941 is about 582.6611179748.

The spelling of 197809941 in words is "one hundred ninety-seven million, eight hundred nine thousand, nine hundred forty-one".