26144149 has 4 divisors (see below), whose sum is σ = 26158636. Its totient is φ = 26129664.

The previous prime is 26144143. The next prime is 26144159. The reversal of 26144149 is 94144162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4223025 + 21921124 = 2055^2 + 4682^2 .

It is a cyclic number.

It is not a de Polignac number, because 26144149 - 2¹³ = 26135957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26144149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26144143) 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, 4074 + ... + 8299.

It is an arithmetic number, because the mean of its divisors is an integer number (6539659).

Almost surely, 2^26144149 is an apocalyptic number.

It is an amenable number.

26144149 is a deficient number, since it is larger than the sum of its proper divisors (14487).

26144149 is a wasteful number, since it uses less digits than its factorization.

26144149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14486.

The product of its digits is 6912, while the sum is 31.

The square root of 26144149 is about 5113.1349483463. The cubic root of 26144149 is about 296.7960864161.

The spelling of 26144149 in words is "twenty-six million, one hundred forty-four thousand, one hundred forty-nine".