197229379 has 2 divisors, whose sum is σ = 197229380. Its totient is φ = 197229378.

The previous prime is 197229371. The next prime is 197229397. The reversal of 197229379 is 973922791.

Together with next prime (197229397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197229379 - 2³ = 197229371 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197229371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98614689 + 98614690.

It is an arithmetic number, because the mean of its divisors is an integer number (98614690).

Almost surely, 2^197229379 is an apocalyptic number.

197229379 is a deficient number, since it is larger than the sum of its proper divisors (1).

197229379 is an equidigital number, since it uses as much as digits as its factorization.

197229379 is an odious number, because the sum of its binary digits is odd.

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

The square root of 197229379 is about 14043.8377589603. The cubic root of 197229379 is about 582.0905325956.

The spelling of 197229379 in words is "one hundred ninety-seven million, two hundred twenty-nine thousand, three hundred seventy-nine".