6983139 has 4 divisors (see below), whose sum is σ = 9310856. Its totient is φ = 4655424.

The previous prime is 6983129. The next prime is 6983143. The reversal of 6983139 is 9313896.

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

It is not a de Polignac number, because 6983139 - 2⁹ = 6982627 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6983097 and 6983106.

It is not an unprimeable number, because it can be changed into a prime (6983129) 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, 1163854 + ... + 1163859.

It is an arithmetic number, because the mean of its divisors is an integer number (2327714).

Almost surely, 2^6983139 is an apocalyptic number.

6983139 is a deficient number, since it is larger than the sum of its proper divisors (2327717).

6983139 is a wasteful number, since it uses less digits than its factorization.

6983139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327716.

The product of its digits is 34992, while the sum is 39.

The square root of 6983139 is about 2642.5629604609. The cubic root of 6983139 is about 191.1394046381.

Adding to 6983139 its product of digits (34992), we get a triangular number (7018131 = T₃₇₄₆).

The spelling of 6983139 in words is "six million, nine hundred eighty-three thousand, one hundred thirty-nine".