26089861 has 4 divisors (see below), whose sum is σ = 29816992. Its totient is φ = 22362732.

The previous prime is 26089853. The next prime is 26089871. The reversal of 26089861 is 16898062.

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 not a de Polignac number, because 26089861 - 2³ = 26089853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26089801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1863555 + ... + 1863568.

It is an arithmetic number, because the mean of its divisors is an integer number (7454248).

Almost surely, 2^26089861 is an apocalyptic number.

It is an amenable number.

26089861 is a deficient number, since it is larger than the sum of its proper divisors (3727131).

26089861 is an equidigital number, since it uses as much as digits as its factorization.

26089861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727130.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 26089861 is about 5107.8235090888. The cubic root of 26089861 is about 296.5905129336.

The spelling of 26089861 in words is "twenty-six million, eighty-nine thousand, eight hundred sixty-one".