197446943 has 2 divisors, whose sum is σ = 197446944. Its totient is φ = 197446942.

The previous prime is 197446933. The next prime is 197446961. The reversal of 197446943 is 349644791.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197446943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197446933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98723471 + 98723472.

It is an arithmetic number, because the mean of its divisors is an integer number (98723472).

Almost surely, 2^197446943 is an apocalyptic number.

197446943 is a deficient number, since it is larger than the sum of its proper divisors (1).

197446943 is an equidigital number, since it uses as much as digits as its factorization.

197446943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 197446943 is about 14051.5815124135. The cubic root of 197446943 is about 582.3044888995.

The spelling of 197446943 in words is "one hundred ninety-seven million, four hundred forty-six thousand, nine hundred forty-three".