26649043 has 2 divisors, whose sum is σ = 26649044. Its totient is φ = 26649042.

The previous prime is 26649037. The next prime is 26649053. The reversal of 26649043 is 34094662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26649043 - 2⁵ = 26649011 is a prime.

It is not a weakly prime, because it can be changed into another prime (26649053) 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, 13324521 + 13324522.

It is an arithmetic number, because the mean of its divisors is an integer number (13324522).

Almost surely, 2^26649043 is an apocalyptic number.

26649043 is a deficient number, since it is larger than the sum of its proper divisors (1).

26649043 is an equidigital number, since it uses as much as digits as its factorization.

26649043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 26649043 is about 5162.2711087272. The cubic root of 26649043 is about 298.6944862800.

The spelling of 26649043 in words is "twenty-six million, six hundred forty-nine thousand, forty-three".