6942439 has 4 divisors (see below), whose sum is σ = 7934224. Its totient is φ = 5950656.

The previous prime is 6942433. The next prime is 6942469. The reversal of 6942439 is 9342496.

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 6942439 - 2³ = 6942431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6942398 and 6942407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6942431) 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, 495882 + ... + 495895.

It is an arithmetic number, because the mean of its divisors is an integer number (1983556).

Almost surely, 2^6942439 is an apocalyptic number.

6942439 is a deficient number, since it is larger than the sum of its proper divisors (991785).

6942439 is an equidigital number, since it uses as much as digits as its factorization.

6942439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991784.

The product of its digits is 46656, while the sum is 37.

The square root of 6942439 is about 2634.8508496687. The cubic root of 6942439 is about 190.7673400375.

It can be divided in two parts, 6942 and 439, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 6942439 in words is "six million, nine hundred forty-two thousand, four hundred thirty-nine".