6994139 has 8 divisors (see below), whose sum is σ = 7402752. Its totient is φ = 6594280.

The previous prime is 6994121. The next prime is 6994151. The reversal of 6994139 is 9314996.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6994139 is a prime.

It is a d-powerful number, because it can be written as 6⁸ + 9² + 9⁶ + 4 + 1 + 3³ + 9⁷ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6994096 and 6994105.

It is not an unprimeable number, because it can be changed into a prime (6994159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509 + ... + 3774.

It is an arithmetic number, because the mean of its divisors is an integer number (925344).

Almost surely, 2^6994139 is an apocalyptic number.

6994139 is a deficient number, since it is larger than the sum of its proper divisors (408613).

6994139 is a wasteful number, since it uses less digits than its factorization.

6994139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377.

The product of its digits is 52488, while the sum is 41.

The square root of 6994139 is about 2644.6434542297. The cubic root of 6994139 is about 191.2397143713.

The spelling of 6994139 in words is "six million, nine hundred ninety-four thousand, one hundred thirty-nine".