26448391 has 2 divisors, whose sum is σ = 26448392. Its totient is φ = 26448390.

The previous prime is 26448371. The next prime is 26448407. The reversal of 26448391 is 19384462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26448391 - 2⁹ = 26447879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26448391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26448341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13224195 + 13224196.

It is an arithmetic number, because the mean of its divisors is an integer number (13224196).

Almost surely, 2^26448391 is an apocalyptic number.

26448391 is a deficient number, since it is larger than the sum of its proper divisors (1).

26448391 is an equidigital number, since it uses as much as digits as its factorization.

26448391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The square root of 26448391 is about 5142.7999183324. The cubic root of 26448391 is about 297.9429308309.

The spelling of 26448391 in words is "twenty-six million, four hundred forty-eight thousand, three hundred ninety-one".