6939659 has 4 divisors (see below), whose sum is σ = 7043304. Its totient is φ = 6836016.

The previous prime is 6939649. The next prime is 6939677. The reversal of 6939659 is 9569396.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6939659 - 2⁴ = 6939643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6939649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51722 + ... + 51855.

It is an arithmetic number, because the mean of its divisors is an integer number (1760826).

Almost surely, 2^6939659 is an apocalyptic number.

6939659 is a deficient number, since it is larger than the sum of its proper divisors (103645).

6939659 is a wasteful number, since it uses less digits than its factorization.

6939659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103644.

The product of its digits is 393660, while the sum is 47.

The square root of 6939659 is about 2634.3232527539. The cubic root of 6939659 is about 190.7418732907.

The spelling of 6939659 in words is "six million, nine hundred thirty-nine thousand, six hundred fifty-nine".