26449939 has 2 divisors, whose sum is σ = 26449940. Its totient is φ = 26449938.

The previous prime is 26449933. The next prime is 26449949. The reversal of 26449939 is 93994462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26449939 - 2⁹ = 26449427 is a prime.

It is not a weakly prime, because it can be changed into another prime (26449933) 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, 13224969 + 13224970.

It is an arithmetic number, because the mean of its divisors is an integer number (13224970).

Almost surely, 2^26449939 is an apocalyptic number.

26449939 is a deficient number, since it is larger than the sum of its proper divisors (1).

26449939 is an equidigital number, since it uses as much as digits as its factorization.

26449939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 46.

The square root of 26449939 is about 5142.9504178049. The cubic root of 26449939 is about 297.9487434928.

The spelling of 26449939 in words is "twenty-six million, four hundred forty-nine thousand, nine hundred thirty-nine".