26893921 has 2 divisors, whose sum is σ = 26893922. Its totient is φ = 26893920.

The previous prime is 26893903. The next prime is 26893927. The reversal of 26893921 is 12939862.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24750625 + 2143296 = 4975^2 + 1464^2 .

It is a cyclic number.

It is not a de Polignac number, because 26893921 - 2¹⁹ = 26369633 is a prime.

It is not a weakly prime, because it can be changed into another prime (26893927) 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, 13446960 + 13446961.

It is an arithmetic number, because the mean of its divisors is an integer number (13446961).

Almost surely, 2^26893921 is an apocalyptic number.

It is an amenable number.

26893921 is a deficient number, since it is larger than the sum of its proper divisors (1).

26893921 is an equidigital number, since it uses as much as digits as its factorization.

26893921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 40.

The square root of 26893921 is about 5185.9349205327. The cubic root of 26893921 is about 299.6065991596.

The spelling of 26893921 in words is "twenty-six million, eight hundred ninety-three thousand, nine hundred twenty-one".