26394409 has 4 divisors (see below), whose sum is σ = 27542016. Its totient is φ = 25246804.

The previous prime is 26394397. The next prime is 26394419. The reversal of 26394409 is 90449362.

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 26394409 - 2⁷ = 26394281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26394419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573769 + ... + 573814.

It is an arithmetic number, because the mean of its divisors is an integer number (6885504).

Almost surely, 2^26394409 is an apocalyptic number.

It is an amenable number.

26394409 is a deficient number, since it is larger than the sum of its proper divisors (1147607).

26394409 is a wasteful number, since it uses less digits than its factorization.

26394409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147606.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 26394409 is about 5137.5489292074. The cubic root of 26394409 is about 297.7400891273.

The spelling of 26394409 in words is "twenty-six million, three hundred ninety-four thousand, four hundred nine".