26460989 has 4 divisors (see below), whose sum is σ = 26472156. Its totient is φ = 26449824.

The previous prime is 26460961. The next prime is 26460997. The reversal of 26460989 is 98906462.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 25836889 + 624100 = 5083^2 + 790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26460989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26460089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464 + ... + 7289.

It is an arithmetic number, because the mean of its divisors is an integer number (6618039).

Almost surely, 2^26460989 is an apocalyptic number.

It is an amenable number.

26460989 is a deficient number, since it is larger than the sum of its proper divisors (11167).

26460989 is an equidigital number, since it uses as much as digits as its factorization.

26460989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11166.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 26460989 is about 5144.0245916986. The cubic root of 26460989 is about 297.9902290987.

The spelling of 26460989 in words is "twenty-six million, four hundred sixty thousand, nine hundred eighty-nine".