26913791 has 2 divisors, whose sum is σ = 26913792. Its totient is φ = 26913790.

The previous prime is 26913781. The next prime is 26913847. The reversal of 26913791 is 19731962.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26913791 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26913701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13456895 + 13456896.

It is an arithmetic number, because the mean of its divisors is an integer number (13456896).

Almost surely, 2^26913791 is an apocalyptic number.

26913791 is a deficient number, since it is larger than the sum of its proper divisors (1).

26913791 is an equidigital number, since it uses as much as digits as its factorization.

26913791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 38.

The square root of 26913791 is about 5187.8503255202. The cubic root of 26913791 is about 299.6803669775.

The spelling of 26913791 in words is "twenty-six million, nine hundred thirteen thousand, seven hundred ninety-one".