26644049 has 4 divisors (see below), whose sum is σ = 28211364. Its totient is φ = 25076736.

The previous prime is 26644043. The next prime is 26644063. The reversal of 26644049 is 94044662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94044662 = 2 ⋅47022331.

It can be written as a sum of positive squares in 2 ways, for example, as 22515025 + 4129024 = 4745^2 + 2032^2 .

It is a cyclic number.

It is not a de Polignac number, because 26644049 - 2¹² = 26639953 is a prime.

It is a super-2 number, since 2×26644049² = 1419810694228802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26644043) 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, 783632 + ... + 783665.

It is an arithmetic number, because the mean of its divisors is an integer number (7052841).

Almost surely, 2^26644049 is an apocalyptic number.

It is an amenable number.

26644049 is a deficient number, since it is larger than the sum of its proper divisors (1567315).

26644049 is a wasteful number, since it uses less digits than its factorization.

26644049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567314.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 26644049 is about 5161.7873842304. The cubic root of 26644049 is about 298.6758267800.

The spelling of 26644049 in words is "twenty-six million, six hundred forty-four thousand, forty-nine".