26939641 has 2 divisors, whose sum is σ = 26939642. Its totient is φ = 26939640.

The previous prime is 26939639. The next prime is 26939657. The reversal of 26939641 is 14693962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23078416 + 3861225 = 4804^2 + 1965^2 .

It is a cyclic number.

It is not a de Polignac number, because 26939641 - 2¹ = 26939639 is a prime.

Together with 26939639, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 26939594 and 26939603.

It is not a weakly prime, because it can be changed into another prime (26969641) 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, 13469820 + 13469821.

It is an arithmetic number, because the mean of its divisors is an integer number (13469821).

Almost surely, 2^26939641 is an apocalyptic number.

It is an amenable number.

26939641 is a deficient number, since it is larger than the sum of its proper divisors (1).

26939641 is an equidigital number, since it uses as much as digits as its factorization.

26939641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 40.

The square root of 26939641 is about 5190.3411255909. The cubic root of 26939641 is about 299.7762813562.

The spelling of 26939641 in words is "twenty-six million, nine hundred thirty-nine thousand, six hundred forty-one".