26443489 has 2 divisors, whose sum is σ = 26443490. Its totient is φ = 26443488.

The previous prime is 26443481. The next prime is 26443511. The reversal of 26443489 is 98434462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23203489 + 3240000 = 4817^2 + 1800^2 .

It is a cyclic number.

It is not a de Polignac number, because 26443489 - 2³ = 26443481 is a prime.

It is a super-2 number, since 2×26443489² = 1398516220986242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26443481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13221744 + 13221745.

It is an arithmetic number, because the mean of its divisors is an integer number (13221745).

Almost surely, 2^26443489 is an apocalyptic number.

It is an amenable number.

26443489 is a deficient number, since it is larger than the sum of its proper divisors (1).

26443489 is an equidigital number, since it uses as much as digits as its factorization.

26443489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 40.

The square root of 26443489 is about 5142.3233076111. The cubic root of 26443489 is about 297.9245225720.

The spelling of 26443489 in words is "twenty-six million, four hundred forty-three thousand, four hundred eighty-nine".