6912091 has 2 divisors, whose sum is σ = 6912092. Its totient is φ = 6912090.

The previous prime is 6912089. The next prime is 6912131. The reversal of 6912091 is 1902196.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6912091 - 2¹ = 6912089 is a prime.

Together with 6912089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6912011) 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, 3456045 + 3456046.

It is an arithmetic number, because the mean of its divisors is an integer number (3456046).

Almost surely, 2^6912091 is an apocalyptic number.

6912091 is a deficient number, since it is larger than the sum of its proper divisors (1).

6912091 is an equidigital number, since it uses as much as digits as its factorization.

6912091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 6912091 is about 2629.0855824792. The cubic root of 6912091 is about 190.4889621902.

The spelling of 6912091 in words is "six million, nine hundred twelve thousand, ninety-one".