26140091 has 4 divisors (see below), whose sum is σ = 26152152. Its totient is φ = 26128032.

The previous prime is 26140027. The next prime is 26140109. The reversal of 26140091 is 19004162.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 26140091 - 2⁶ = 26140027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26140021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781 + ... + 7446.

It is an arithmetic number, because the mean of its divisors is an integer number (6538038).

Almost surely, 2^26140091 is an apocalyptic number.

26140091 is a deficient number, since it is larger than the sum of its proper divisors (12061).

26140091 is an equidigital number, since it uses as much as digits as its factorization.

26140091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12060.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 26140091 is about 5112.7381118145. The cubic root of 26140091 is about 296.7807297508.

The spelling of 26140091 in words is "twenty-six million, one hundred forty thousand, ninety-one".