86158405 has 8 divisors (see below), whose sum is σ = 103546872. Its totient is φ = 68822208.

The previous prime is 86158403. The next prime is 86158409. The reversal of 86158405 is 50485168.

It can be written as a sum of positive squares in 4 ways, for example, as 33189121 + 52969284 = 5761^2 + 7278^2 .

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 86158405 - 2¹ = 86158403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86158403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9342 + ... + 16111.

It is an arithmetic number, because the mean of its divisors is an integer number (12943359).

Almost surely, 2^86158405 is an apocalyptic number.

It is an amenable number.

86158405 is a deficient number, since it is larger than the sum of its proper divisors (17388467).

86158405 is a wasteful number, since it uses less digits than its factorization.

86158405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26135.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 86158405 is about 9282.1551915490. The cubic root of 86158405 is about 441.6713379515.

It can be divided in two parts, 8615 and 8405, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 86158405 in words is "eighty-six million, one hundred fifty-eight thousand, four hundred five".