26149 has 4 divisors (see below), whose sum is σ = 26560. Its totient is φ = 25740.

The previous prime is 26141. The next prime is 26153. The reversal of 26149 is 94162.

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 26149 - 2³ = 26141 is a prime.

It is a Duffinian number.

26149 is a lucky number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87 + ... + 244.

It is an arithmetic number, because the mean of its divisors is an integer number (6640).

2²⁶¹⁴⁹ is an apocalyptic number.

It is an amenable number.

26149 is a deficient number, since it is larger than the sum of its proper divisors (411).

26149 is an equidigital number, since it uses as much as digits as its factorization.

26149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410.

The product of its digits is 432, while the sum is 22.

The square root of 26149 is about 161.7065242963. The cubic root of 26149 is about 29.6814441942.

The spelling of 26149 in words is "twenty-six thousand, one hundred forty-nine".