6928239 has 4 divisors (see below), whose sum is σ = 9237656. Its totient is φ = 4618824.

The previous prime is 6928237. The next prime is 6928241. The reversal of 6928239 is 9328296.

6928239 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (6928237) and next prime (6928241).

It is not a de Polignac number, because 6928239 - 2¹ = 6928237 is a prime.

It is a super-2 number, since 2×6928239² = 96000991282242, which contains 22 as substring.

It is a d-powerful number, because it can be written as 6⁶ + 9³ + 2 + 8⁷ + 2 + 3¹⁴ + 9³ .

It is a D-number.

It is a Duffinian number.

6928239 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6928197 and 6928206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6928237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154704 + ... + 1154709.

It is an arithmetic number, because the mean of its divisors is an integer number (2309414).

Almost surely, 2^6928239 is an apocalyptic number.

6928239 is a deficient number, since it is larger than the sum of its proper divisors (2309417).

6928239 is a wasteful number, since it uses less digits than its factorization.

6928239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309416.

The product of its digits is 46656, while the sum is 39.

The square root of 6928239 is about 2632.1548206745. The cubic root of 6928239 is about 190.6371866795.

It can be divided in two parts, 69 and 28239, that multiplied together give a palindrome (1948491).

The spelling of 6928239 in words is "six million, nine hundred twenty-eight thousand, two hundred thirty-nine".