6941509 has 2 divisors, whose sum is σ = 6941510. Its totient is φ = 6941508.

The previous prime is 6941507. The next prime is 6941549. The reversal of 6941509 is 9051496.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6140484 + 801025 = 2478^2 + 895^2 .

It is a cyclic number.

It is not a de Polignac number, because 6941509 - 2¹ = 6941507 is a prime.

Together with 6941507, it forms a pair of twin primes.

6941509 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6941503) 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, 3470754 + 3470755.

It is an arithmetic number, because the mean of its divisors is an integer number (3470755).

Almost surely, 2^6941509 is an apocalyptic number.

It is an amenable number.

6941509 is a deficient number, since it is larger than the sum of its proper divisors (1).

6941509 is an equidigital number, since it uses as much as digits as its factorization.

6941509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 6941509 is about 2634.6743631804. The cubic root of 6941509 is about 190.7588213431.

The spelling of 6941509 in words is "six million, nine hundred forty-one thousand, five hundred nine".