26401369 has 2 divisors, whose sum is σ = 26401370. Its totient is φ = 26401368.

The previous prime is 26401343. The next prime is 26401381. The reversal of 26401369 is 96310462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26163225 + 238144 = 5115^2 + 488^2 .

It is a cyclic number.

It is not a de Polignac number, because 26401369 - 2⁵ = 26401337 is a prime.

It is a super-2 number, since 2×26401369² = 1394064570148322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26401369.

It is not a weakly prime, because it can be changed into another prime (26401069) 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, 13200684 + 13200685.

It is an arithmetic number, because the mean of its divisors is an integer number (13200685).

Almost surely, 2^26401369 is an apocalyptic number.

It is an amenable number.

26401369 is a deficient number, since it is larger than the sum of its proper divisors (1).

26401369 is an equidigital number, since it uses as much as digits as its factorization.

26401369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 26401369 is about 5138.2262503708. The cubic root of 26401369 is about 297.7662574079.

The spelling of 26401369 in words is "twenty-six million, four hundred one thousand, three hundred sixty-nine".