26109887 has 2 divisors, whose sum is σ = 26109888. Its totient is φ = 26109886.

The previous prime is 26109883. The next prime is 26109913. The reversal of 26109887 is 78890162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26109887 - 2² = 26109883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26109883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13054943 + 13054944.

It is an arithmetic number, because the mean of its divisors is an integer number (13054944).

Almost surely, 2^26109887 is an apocalyptic number.

26109887 is a deficient number, since it is larger than the sum of its proper divisors (1).

26109887 is an equidigital number, since it uses as much as digits as its factorization.

26109887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 26109887 is about 5109.7834592084. The cubic root of 26109887 is about 296.6663789642. Note that the first 3 decimals are identical.

The spelling of 26109887 in words is "twenty-six million, one hundred nine thousand, eight hundred eighty-seven".