26989017 has 16 divisors (see below), whose sum is σ = 39813120. Its totient is φ = 16125200.

The previous prime is 26989009. The next prime is 26989069. The reversal of 26989017 is 71098962.

It is a cyclic number.

It is not a de Polignac number, because 26989017 - 2³ = 26989009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26989017.

It is not an unprimeable number, because it can be changed into a prime (26989087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3417 + ... + 8102.

It is an arithmetic number, because the mean of its divisors is an integer number (2488320).

Almost surely, 2^26989017 is an apocalyptic number.

It is an amenable number.

26989017 is a deficient number, since it is larger than the sum of its proper divisors (12824103).

26989017 is a wasteful number, since it uses less digits than its factorization.

26989017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11604.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 26989017 is about 5195.0954755423. The cubic root of 26989017 is about 299.9593167054.

The spelling of 26989017 in words is "twenty-six million, nine hundred eighty-nine thousand, seventeen".