26893649 has 2 divisors, whose sum is σ = 26893650. Its totient is φ = 26893648.

The previous prime is 26893639. The next prime is 26893681. The reversal of 26893649 is 94639862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20866624 + 6027025 = 4568^2 + 2455^2 .

It is a cyclic number.

It is not a de Polignac number, because 26893649 - 2²⁴ = 10116433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26893639) 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 as a sum of consecutive naturals, namely, 13446824 + 13446825.

It is an arithmetic number, because the mean of its divisors is an integer number (13446825).

Almost surely, 2^26893649 is an apocalyptic number.

It is an amenable number.

26893649 is a deficient number, since it is larger than the sum of its proper divisors (1).

26893649 is an equidigital number, since it uses as much as digits as its factorization.

26893649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 47.

The square root of 26893649 is about 5185.9086956868. The cubic root of 26893649 is about 299.6055891015.

The spelling of 26893649 in words is "twenty-six million, eight hundred ninety-three thousand, six hundred forty-nine".