26919791 has 2 divisors, whose sum is σ = 26919792. Its totient is φ = 26919790.

The previous prime is 26919787. The next prime is 26919793. The reversal of 26919791 is 19791962.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26919791 - 2² = 26919787 is a prime.

Together with 26919793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26919793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13459895 + 13459896.

It is an arithmetic number, because the mean of its divisors is an integer number (13459896).

Almost surely, 2^26919791 is an apocalyptic number.

26919791 is a deficient number, since it is larger than the sum of its proper divisors (1).

26919791 is an equidigital number, since it uses as much as digits as its factorization.

26919791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 44.

The square root of 26919791 is about 5188.4285674952. The cubic root of 26919791 is about 299.7026349738.

The spelling of 26919791 in words is "twenty-six million, nine hundred nineteen thousand, seven hundred ninety-one".