197190401 has 4 divisors (see below), whose sum is σ = 203990100. Its totient is φ = 190390704.

The previous prime is 197190397. The next prime is 197190439. The reversal of 197190401 is 104091791.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80982001 + 116208400 = 8999^2 + 10780^2 .

It is a cyclic number.

It is not a de Polignac number, because 197190401 - 2² = 197190397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197190451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3399806 + ... + 3399863.

It is an arithmetic number, because the mean of its divisors is an integer number (50997525).

Almost surely, 2^197190401 is an apocalyptic number.

It is an amenable number.

197190401 is a deficient number, since it is larger than the sum of its proper divisors (6799699).

197190401 is an equidigital number, since it uses as much as digits as its factorization.

197190401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6799698.

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 197190401 is about 14042.4499643047. The cubic root of 197190401 is about 582.0521843203.

The spelling of 197190401 in words is "one hundred ninety-seven million, one hundred ninety thousand, four hundred one".