197191339 has 2 divisors, whose sum is σ = 197191340. Its totient is φ = 197191338.

The previous prime is 197191333. The next prime is 197191363. The reversal of 197191339 is 933191791.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197191339 - 2³ = 197191331 is a prime.

It is a super-2 number, since 2×197191339² = 77768848353225842, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 197191295 and 197191304.

It is not a weakly prime, because it can be changed into another prime (197191331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98595669 + 98595670.

It is an arithmetic number, because the mean of its divisors is an integer number (98595670).

Almost surely, 2^197191339 is an apocalyptic number.

197191339 is a deficient number, since it is larger than the sum of its proper divisors (1).

197191339 is an equidigital number, since it uses as much as digits as its factorization.

197191339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45927, while the sum is 43.

The square root of 197191339 is about 14042.4833629953. The cubic root of 197191339 is about 582.0531072254.

The spelling of 197191339 in words is "one hundred ninety-seven million, one hundred ninety-one thousand, three hundred thirty-nine".