6890139 has 12 divisors (see below), whose sum is σ = 10296000. Its totient is φ = 4434864.

The previous prime is 6890123. The next prime is 6890161. The reversal of 6890139 is 9310986.

It is not a de Polignac number, because 6890139 - 2⁴ = 6890123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6890239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12939 + ... + 13460.

It is an arithmetic number, because the mean of its divisors is an integer number (858000).

Almost surely, 2^6890139 is an apocalyptic number.

6890139 is a deficient number, since it is larger than the sum of its proper divisors (3405861).

6890139 is a wasteful number, since it uses less digits than its factorization.

6890139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26434 (or 26431 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 6890139 is about 2624.9074269391. The cubic root of 6890139 is about 190.2870913768.

The spelling of 6890139 in words is "six million, eight hundred ninety thousand, one hundred thirty-nine".