6940189 has 2 divisors, whose sum is σ = 6940190. Its totient is φ = 6940188.

The previous prime is 6940177. The next prime is 6940207. The reversal of 6940189 is 9810496.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6528025 + 412164 = 2555^2 + 642^2 .

It is a cyclic number.

It is not a de Polignac number, because 6940189 - 2⁹ = 6939677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6940289) 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 as a sum of consecutive naturals, namely, 3470094 + 3470095.

It is an arithmetic number, because the mean of its divisors is an integer number (3470095).

Almost surely, 2^6940189 is an apocalyptic number.

It is an amenable number.

6940189 is a deficient number, since it is larger than the sum of its proper divisors (1).

6940189 is an equidigital number, since it uses as much as digits as its factorization.

6940189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 6940189 is about 2634.4238459291. The cubic root of 6940189 is about 190.7467289865.

The spelling of 6940189 in words is "six million, nine hundred forty thousand, one hundred eighty-nine".