197970943 has 2 divisors, whose sum is σ = 197970944. Its totient is φ = 197970942.

The previous prime is 197970931. The next prime is 197970973. The reversal of 197970943 is 349079791.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197970943 - 2⁵ = 197970911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197970973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98985471 + 98985472.

It is an arithmetic number, because the mean of its divisors is an integer number (98985472).

Almost surely, 2^197970943 is an apocalyptic number.

197970943 is a deficient number, since it is larger than the sum of its proper divisors (1).

197970943 is an equidigital number, since it uses as much as digits as its factorization.

197970943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 197970943 is about 14070.2147460513. The cubic root of 197970943 is about 582.8191554746.

The spelling of 197970943 in words is "one hundred ninety-seven million, nine hundred seventy thousand, nine hundred forty-three".