26909669 has 4 divisors (see below), whose sum is σ = 26932896. Its totient is φ = 26886444.

The previous prime is 26909629. The next prime is 26909671. The reversal of 26909669 is 96690962.

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 26909669 - 2¹⁶ = 26844133 is a prime.

It is a super-2 number, since 2×26909669² = 1448260571379122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26909629) 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, 9779 + ... + 12224.

It is an arithmetic number, because the mean of its divisors is an integer number (6733224).

Almost surely, 2^26909669 is an apocalyptic number.

It is an amenable number.

26909669 is a deficient number, since it is larger than the sum of its proper divisors (23227).

26909669 is a wasteful number, since it uses less digits than its factorization.

26909669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23226.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 26909669 is about 5187.4530359320. The cubic root of 26909669 is about 299.6650669461.

The spelling of 26909669 in words is "twenty-six million, nine hundred nine thousand, six hundred sixty-nine".