26809449 has 16 divisors (see below), whose sum is σ = 36826944. Its totient is φ = 17337600.

The previous prime is 26809441. The next prime is 26809457. The reversal of 26809449 is 94490862.

It is an interprime number because it is at equal distance from previous prime (26809441) and next prime (26809457).

It is not a de Polignac number, because 26809449 - 2³ = 26809441 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 26809449.

It is not an unprimeable number, because it can be changed into a prime (26809441) 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 15 ways as a sum of consecutive naturals, for example, 25437 + ... + 26469.

It is an arithmetic number, because the mean of its divisors is an integer number (2301684).

Almost surely, 2^26809449 is an apocalyptic number.

It is an amenable number.

26809449 is a deficient number, since it is larger than the sum of its proper divisors (10017495).

26809449 is a wasteful number, since it uses less digits than its factorization.

26809449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 26809449 is about 5177.7841785845. The cubic root of 26809449 is about 299.2925887645.

The spelling of 26809449 in words is "twenty-six million, eight hundred nine thousand, four hundred forty-nine".