26489899 has 2 divisors, whose sum is σ = 26489900. Its totient is φ = 26489898.

The previous prime is 26489873. The next prime is 26489917. The reversal of 26489899 is 99898462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26489899 - 2¹⁵ = 26457131 is a prime.

It is not a weakly prime, because it can be changed into another prime (26489809) 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, 13244949 + 13244950.

It is an arithmetic number, because the mean of its divisors is an integer number (13244950).

Almost surely, 2^26489899 is an apocalyptic number.

26489899 is a deficient number, since it is larger than the sum of its proper divisors (1).

26489899 is an equidigital number, since it uses as much as digits as its factorization.

26489899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 55.

The square root of 26489899 is about 5146.8338811351. The cubic root of 26489899 is about 298.0987128496.

The spelling of 26489899 in words is "twenty-six million, four hundred eighty-nine thousand, eight hundred ninety-nine".