26949647 has 2 divisors, whose sum is σ = 26949648. Its totient is φ = 26949646.

The previous prime is 26949589. The next prime is 26949649. The reversal of 26949647 is 74694962.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26949647 - 2²⁴ = 10172431 is a prime.

Together with 26949649, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26949649) 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, 13474823 + 13474824.

It is an arithmetic number, because the mean of its divisors is an integer number (13474824).

Almost surely, 2^26949647 is an apocalyptic number.

26949647 is a deficient number, since it is larger than the sum of its proper divisors (1).

26949647 is an equidigital number, since it uses as much as digits as its factorization.

26949647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 26949647 is about 5191.3049419197. The cubic root of 26949647 is about 299.8133913555.

The spelling of 26949647 in words is "twenty-six million, nine hundred forty-nine thousand, six hundred forty-seven".