197889323 has 2 divisors, whose sum is σ = 197889324. Its totient is φ = 197889322.

The previous prime is 197889287. The next prime is 197889361. The reversal of 197889323 is 323988791.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197889323 - 2⁸ = 197889067 is a prime.

It is not a weakly prime, because it can be changed into another prime (197889383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98944661 + 98944662.

It is an arithmetic number, because the mean of its divisors is an integer number (98944662).

Almost surely, 2^197889323 is an apocalyptic number.

197889323 is a deficient number, since it is larger than the sum of its proper divisors (1).

197889323 is an equidigital number, since it uses as much as digits as its factorization.

197889323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 50.

The square root of 197889323 is about 14067.3139937943. The cubic root of 197889323 is about 582.7390490414.

The spelling of 197889323 in words is "one hundred ninety-seven million, eight hundred eighty-nine thousand, three hundred twenty-three".