26390039 has 8 divisors (see below), whose sum is σ = 29656032. Its totient is φ = 23300640.

The previous prime is 26390017. The next prime is 26390041. The reversal of 26390039 is 93009362.

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 26390039 - 2¹⁶ = 26324503 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26389987 and 26390014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26390009) 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, 43832 + ... + 44429.

It is an arithmetic number, because the mean of its divisors is an integer number (3707004).

Almost surely, 2^26390039 is an apocalyptic number.

26390039 is a deficient number, since it is larger than the sum of its proper divisors (3265993).

26390039 is a wasteful number, since it uses less digits than its factorization.

26390039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88297.

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 26390039 is about 5137.1236115165. The cubic root of 26390039 is about 297.7236564047.

The spelling of 26390039 in words is "twenty-six million, three hundred ninety thousand, thirty-nine".