26291117 has 4 divisors (see below), whose sum is σ = 27674880. Its totient is φ = 24907356.

The previous prime is 26291113. The next prime is 26291119. The reversal of 26291117 is 71119262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26291117 - 2² = 26291113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26291117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26291113) 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 in 3 ways as a sum of consecutive naturals, for example, 691853 + ... + 691890.

It is an arithmetic number, because the mean of its divisors is an integer number (6918720).

Almost surely, 2^26291117 is an apocalyptic number.

It is an amenable number.

26291117 is a deficient number, since it is larger than the sum of its proper divisors (1383763).

26291117 is a wasteful number, since it uses less digits than its factorization.

26291117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383762.

The product of its digits is 1512, while the sum is 29.

The square root of 26291117 is about 5127.4864212399. The cubic root of 26291117 is about 297.3511889052.

The spelling of 26291117 in words is "twenty-six million, two hundred ninety-one thousand, one hundred seventeen".