197446901 has 2 divisors, whose sum is σ = 197446902. Its totient is φ = 197446900.

The previous prime is 197446897. The next prime is 197446919. The reversal of 197446901 is 109644791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115562500 + 81884401 = 10750^2 + 9049^2 .

It is an emirp because it is prime and its reverse (109644791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197446901 - 2² = 197446897 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197446961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98723450 + 98723451.

It is an arithmetic number, because the mean of its divisors is an integer number (98723451).

Almost surely, 2^197446901 is an apocalyptic number.

It is an amenable number.

197446901 is a deficient number, since it is larger than the sum of its proper divisors (1).

197446901 is an equidigital number, since it uses as much as digits as its factorization.

197446901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 197446901 is about 14051.5800179197. The cubic root of 197446901 is about 582.3044476112.

The spelling of 197446901 in words is "one hundred ninety-seven million, four hundred forty-six thousand, nine hundred one".