26475989 has 2 divisors, whose sum is σ = 26475990. Its totient is φ = 26475988.

The previous prime is 26475961. The next prime is 26476001. The reversal of 26475989 is 98957462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25331089 + 1144900 = 5033^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 26475989 - 2¹⁶ = 26410453 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26475089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13237994 + 13237995.

It is an arithmetic number, because the mean of its divisors is an integer number (13237995).

Almost surely, 2^26475989 is an apocalyptic number.

It is an amenable number.

26475989 is a deficient number, since it is larger than the sum of its proper divisors (1).

26475989 is an equidigital number, since it uses as much as digits as its factorization.

26475989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 26475989 is about 5145.4823874929. The cubic root of 26475989 is about 298.0465259249.

The spelling of 26475989 in words is "twenty-six million, four hundred seventy-five thousand, nine hundred eighty-nine".