86138527 has 4 divisors (see below), whose sum is σ = 87550696. Its totient is φ = 84726360.

The previous prime is 86138509. The next prime is 86138567. The reversal of 86138527 is 72583168.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86138527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86138527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86138567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 705993 + ... + 706114.

It is an arithmetic number, because the mean of its divisors is an integer number (21887674).

Almost surely, 2^86138527 is an apocalyptic number.

86138527 is a deficient number, since it is larger than the sum of its proper divisors (1412169).

86138527 is a wasteful number, since it uses less digits than its factorization.

86138527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412168.

The product of its digits is 80640, while the sum is 40.

The square root of 86138527 is about 9281.0843655254. The cubic root of 86138527 is about 441.6373686669.

The spelling of 86138527 in words is "eighty-six million, one hundred thirty-eight thousand, five hundred twenty-seven".