6928539 has 4 divisors (see below), whose sum is σ = 9238056. Its totient is φ = 4619024.

The previous prime is 6928529. The next prime is 6928541. The reversal of 6928539 is 9358296.

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 6928539 - 2¹⁵ = 6895771 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 6928539.

It is not an unprimeable number, because it can be changed into a prime (6928529) 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 in 3 ways as a sum of consecutive naturals, for example, 1154754 + ... + 1154759.

It is an arithmetic number, because the mean of its divisors is an integer number (2309514).

Almost surely, 2^6928539 is an apocalyptic number.

6928539 is a deficient number, since it is larger than the sum of its proper divisors (2309517).

6928539 is a wasteful number, since it uses less digits than its factorization.

6928539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309516.

The product of its digits is 116640, while the sum is 42.

The square root of 6928539 is about 2632.2118075869. The cubic root of 6928539 is about 190.6399382363.

The spelling of 6928539 in words is "six million, nine hundred twenty-eight thousand, five hundred thirty-nine".