26446921 has 2 divisors, whose sum is σ = 26446922. Its totient is φ = 26446920.

The previous prime is 26446907. The next prime is 26446933. The reversal of 26446921 is 12964462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26010000 + 436921 = 5100^2 + 661^2 .

It is a cyclic number.

It is not a de Polignac number, because 26446921 - 2⁷ = 26446793 is a prime.

It is not a weakly prime, because it can be changed into another prime (26446961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13223460 + 13223461.

It is an arithmetic number, because the mean of its divisors is an integer number (13223461).

Almost surely, 2^26446921 is an apocalyptic number.

It is an amenable number.

26446921 is a deficient number, since it is larger than the sum of its proper divisors (1).

26446921 is an equidigital number, since it uses as much as digits as its factorization.

26446921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 26446921 is about 5142.6569980896. The cubic root of 26446921 is about 297.9374108452.

The spelling of 26446921 in words is "twenty-six million, four hundred forty-six thousand, nine hundred twenty-one".