26189939 has 8 divisors (see below), whose sum is σ = 27996192. Its totient is φ = 24439360.

The previous prime is 26189921. The next prime is 26189959. The reversal of 26189939 is 93998162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26189939 - 2¹² = 26185843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26189893 and 26189902.

It is not an unprimeable number, because it can be changed into a prime (26189909) 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 7 ways as a sum of consecutive naturals, for example, 12944 + ... + 14829.

It is an arithmetic number, because the mean of its divisors is an integer number (3499524).

Almost surely, 2^26189939 is an apocalyptic number.

26189939 is a deficient number, since it is larger than the sum of its proper divisors (1806253).

26189939 is a wasteful number, since it uses less digits than its factorization.

26189939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27837.

The product of its digits is 209952, while the sum is 47.

The square root of 26189939 is about 5117.6106729606. The cubic root of 26189939 is about 296.9692592141.

The spelling of 26189939 in words is "twenty-six million, one hundred eighty-nine thousand, nine hundred thirty-nine".