26134639 has 2 divisors, whose sum is σ = 26134640. Its totient is φ = 26134638.

The previous prime is 26134637. The next prime is 26134651. The reversal of 26134639 is 93643162.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26134639 - 2¹ = 26134637 is a prime.

Together with 26134637, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26134637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13067319 + 13067320.

It is an arithmetic number, because the mean of its divisors is an integer number (13067320).

Almost surely, 2^26134639 is an apocalyptic number.

26134639 is a deficient number, since it is larger than the sum of its proper divisors (1).

26134639 is an equidigital number, since it uses as much as digits as its factorization.

26134639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 34.

The square root of 26134639 is about 5112.2049059090. The cubic root of 26134639 is about 296.7600952773.

The spelling of 26134639 in words is "twenty-six million, one hundred thirty-four thousand, six hundred thirty-nine".