26389913 has 8 divisors (see below), whose sum is σ = 29782080. Its totient is φ = 23163280.

The previous prime is 26389903. The next prime is 26389921. The reversal of 26389913 is 31998362.

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 26389913 - 2¹⁸ = 26127769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26389903) 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, 41045 + ... + 41682.

It is an arithmetic number, because the mean of its divisors is an integer number (3722760).

Almost surely, 2^26389913 is an apocalyptic number.

It is an amenable number.

26389913 is a deficient number, since it is larger than the sum of its proper divisors (3392167).

26389913 is a wasteful number, since it uses less digits than its factorization.

26389913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82767.

The product of its digits is 69984, while the sum is 41.

The square root of 26389913 is about 5137.1113478296. Note that the first 3 decimals coincide. The cubic root of 26389913 is about 297.7231825739.

The spelling of 26389913 in words is "twenty-six million, three hundred eighty-nine thousand, nine hundred thirteen".