197708039 has 2 divisors, whose sum is σ = 197708040. Its totient is φ = 197708038.

The previous prime is 197708029. The next prime is 197708041. The reversal of 197708039 is 930807791.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197708039 is a prime.

It is a Sophie Germain prime.

Together with 197708041, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197708029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98854019 + 98854020.

It is an arithmetic number, because the mean of its divisors is an integer number (98854020).

Almost surely, 2^197708039 is an apocalyptic number.

197708039 is a deficient number, since it is larger than the sum of its proper divisors (1).

197708039 is an equidigital number, since it uses as much as digits as its factorization.

197708039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 197708039 is about 14060.8690698690. The cubic root of 197708039 is about 582.5610479590.

The spelling of 197708039 in words is "one hundred ninety-seven million, seven hundred eight thousand, thirty-nine".