26891469 has 24 divisors (see below), whose sum is σ = 43366752. Its totient is φ = 15916320.

The previous prime is 26891443. The next prime is 26891519. The reversal of 26891469 is 96419862.

It is a happy number.

It is not a de Polignac number, because 26891469 - 2¹² = 26887373 is a prime.

It is a super-2 number, since 2×26891469² = 1446302209955922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26891369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1099 + ... + 7415.

It is an arithmetic number, because the mean of its divisors is an integer number (1806948).

Almost surely, 2^26891469 is an apocalyptic number.

It is an amenable number.

26891469 is a deficient number, since it is larger than the sum of its proper divisors (16475283).

26891469 is a wasteful number, since it uses less digits than its factorization.

26891469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6377 (or 6374 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 26891469 is about 5185.6985064695. The cubic root of 26891469 is about 299.5974935367.

The spelling of 26891469 in words is "twenty-six million, eight hundred ninety-one thousand, four hundred sixty-nine".