26888921 has 2 divisors, whose sum is σ = 26888922. Its totient is φ = 26888920.

The previous prime is 26888833. The next prime is 26888941. The reversal of 26888921 is 12988862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23425600 + 3463321 = 4840^2 + 1861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26888921 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26888941) 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, 13444460 + 13444461.

It is an arithmetic number, because the mean of its divisors is an integer number (13444461).

Almost surely, 2^26888921 is an apocalyptic number.

It is an amenable number.

26888921 is a deficient number, since it is larger than the sum of its proper divisors (1).

26888921 is an equidigital number, since it uses as much as digits as its factorization.

26888921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 44.

The square root of 26888921 is about 5185.4528249710. The cubic root of 26888921 is about 299.5880308266.

The spelling of 26888921 in words is "twenty-six million, eight hundred eighty-eight thousand, nine hundred twenty-one".