26582989 has 4 divisors (see below), whose sum is σ = 26614656. Its totient is φ = 26551324.

The previous prime is 26582939. The next prime is 26582993. The reversal of 26582989 is 98928562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26582989 - 2¹³ = 26574797 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 (26582929) 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, 14539 + ... + 16264.

It is an arithmetic number, because the mean of its divisors is an integer number (6653664).

Almost surely, 2^26582989 is an apocalyptic number.

It is an amenable number.

26582989 is a deficient number, since it is larger than the sum of its proper divisors (31667).

26582989 is an equidigital number, since it uses as much as digits as its factorization.

26582989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31666.

The product of its digits is 622080, while the sum is 49.

The square root of 26582989 is about 5155.8693738302. The cubic root of 26582989 is about 298.4474944288.

The spelling of 26582989 in words is "twenty-six million, five hundred eighty-two thousand, nine hundred eighty-nine".