26969489 has 4 divisors (see below), whose sum is σ = 27125556. Its totient is φ = 26813424.

The previous prime is 26969479. The next prime is 26969533. The reversal of 26969489 is 98496962.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98496962 = 2 ⋅49248481.

It can be written as a sum of positive squares in 2 ways, for example, as 25331089 + 1638400 = 5033^2 + 1280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26969489 is a prime.

It is a super-2 number, since 2×26969489² = 1454706673842242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26969489.

It is not an unprimeable number, because it can be changed into a prime (26969479) 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, 77774 + ... + 78119.

It is an arithmetic number, because the mean of its divisors is an integer number (6781389).

Almost surely, 2^26969489 is an apocalyptic number.

It is an amenable number.

26969489 is a deficient number, since it is larger than the sum of its proper divisors (156067).

26969489 is a wasteful number, since it uses less digits than its factorization.

26969489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156066.

The product of its digits is 1679616, while the sum is 53.

The square root of 26969489 is about 5193.2156704685. The cubic root of 26969489 is about 299.8869537034.

The spelling of 26969489 in words is "twenty-six million, nine hundred sixty-nine thousand, four hundred eighty-nine".