26480989 has 2 divisors, whose sum is σ = 26480990. Its totient is φ = 26480988.

The previous prime is 26480963. The next prime is 26481017. The reversal of 26480989 is 98908462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23088025 + 3392964 = 4805^2 + 1842^2 .

It is a cyclic number.

It is not a de Polignac number, because 26480989 - 2¹⁵ = 26448221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26480929) 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, 13240494 + 13240495.

It is an arithmetic number, because the mean of its divisors is an integer number (13240495).

Almost surely, 2^26480989 is an apocalyptic number.

It is an amenable number.

26480989 is a deficient number, since it is larger than the sum of its proper divisors (1).

26480989 is an equidigital number, since it uses as much as digits as its factorization.

26480989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 26480989 is about 5145.9682276516. The cubic root of 26480989 is about 298.0652868083.

The spelling of 26480989 in words is "twenty-six million, four hundred eighty thousand, nine hundred eighty-nine".