26000139 has 8 divisors (see below), whose sum is σ = 37818432. Its totient is φ = 15757640.

The previous prime is 26000131. The next prime is 26000141. The reversal of 26000139 is 93100062.

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 26000139 - 2³ = 26000131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26000131) 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, 393909 + ... + 393974.

It is an arithmetic number, because the mean of its divisors is an integer number (4727304).

Almost surely, 2^26000139 is an apocalyptic number.

26000139 is a deficient number, since it is larger than the sum of its proper divisors (11818293).

26000139 is a wasteful number, since it uses less digits than its factorization.

26000139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787897.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 26000139 is about 5099.0331436460. The cubic root of 26000139 is about 296.2501347718.

The spelling of 26000139 in words is "twenty-six million, one hundred thirty-nine", and thus it is an aban number.