6984139 has 2 divisors, whose sum is σ = 6984140. Its totient is φ = 6984138.

The previous prime is 6984101. The next prime is 6984143. The reversal of 6984139 is 9314896.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6984139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6984149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3492069 + 3492070.

It is an arithmetic number, because the mean of its divisors is an integer number (3492070).

Almost surely, 2^6984139 is an apocalyptic number.

6984139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6984139 is an equidigital number, since it uses as much as digits as its factorization.

6984139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 6984139 is about 2642.7521639382. The cubic root of 6984139 is about 191.1485280558.

The spelling of 6984139 in words is "six million, nine hundred eighty-four thousand, one hundred thirty-nine".