6939797 has 2 divisors, whose sum is σ = 6939798. Its totient is φ = 6939796.

The previous prime is 6939761. The next prime is 6939799. The reversal of 6939797 is 7979396.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3587236 + 3352561 = 1894^2 + 1831^2 .

It is a cyclic number.

It is not a de Polignac number, because 6939797 - 2⁶ = 6939733 is a prime.

Together with 6939799, 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 (6939799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3469898 + 3469899.

It is an arithmetic number, because the mean of its divisors is an integer number (3469899).

Almost surely, 2^6939797 is an apocalyptic number.

It is an amenable number.

6939797 is a deficient number, since it is larger than the sum of its proper divisors (1).

6939797 is an equidigital number, since it uses as much as digits as its factorization.

6939797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 642978, while the sum is 50.

The square root of 6939797 is about 2634.3494453090. The cubic root of 6939797 is about 190.7431376278.

The spelling of 6939797 in words is "six million, nine hundred thirty-nine thousand, seven hundred ninety-seven".