6939236197 has 2 divisors, whose sum is σ = 6939236198. Its totient is φ = 6939236196.

The previous prime is 6939236177. The next prime is 6939236267. The reversal of 6939236197 is 7916329396.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5817723076 + 1121513121 = 76274^2 + 33489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6939236197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6939236147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3469618098 + 3469618099.

It is an arithmetic number, because the mean of its divisors is an integer number (3469618099).

Almost surely, 2^6939236197 is an apocalyptic number.

It is an amenable number.

6939236197 is a deficient number, since it is larger than the sum of its proper divisors (1).

6939236197 is an equidigital number, since it uses as much as digits as its factorization.

6939236197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3306744, while the sum is 55.

The square root of 6939236197 is about 83302.0779872867. The cubic root of 6939236197 is about 1907.3799952331.

The spelling of 6939236197 in words is "six billion, nine hundred thirty-nine million, two hundred thirty-six thousand, one hundred ninety-seven".