26854009 has 12 divisors (see below), whose sum is σ = 33642084. Its totient is φ = 21246624.

The previous prime is 26853989. The next prime is 26854013. The reversal of 26854009 is 90045862.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4528384 + 22325625 = 2128^2 + 4725^2 .

It is not a de Polignac number, because 26854009 - 2⁵ = 26853977 is a prime.

It is a super-2 number, since 2×26854009² = 1442275598744162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26854019) 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 11 ways as a sum of consecutive naturals, for example, 20442 + ... + 21715.

It is an arithmetic number, because the mean of its divisors is an integer number (2803507).

Almost surely, 2^26854009 is an apocalyptic number.

It is an amenable number.

26854009 is a deficient number, since it is larger than the sum of its proper divisors (6788075).

26854009 is a wasteful number, since it uses less digits than its factorization.

26854009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42184 (or 42177 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 26854009 is about 5182.0853910371. The cubic root of 26854009 is about 299.4583151062.

The spelling of 26854009 in words is "twenty-six million, eight hundred fifty-four thousand, nine".