86279573 has 4 divisors (see below), whose sum is σ = 91354860. Its totient is φ = 81204288.

The previous prime is 86279569. The next prime is 86279581. The reversal of 86279573 is 37597268.

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

It can be written as a sum of positive squares in 2 ways, for example, as 78978769 + 7300804 = 8887^2 + 2702^2 .

It is a cyclic number.

It is not a de Polignac number, because 86279573 - 2² = 86279569 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 (86279533) 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 3 ways as a sum of consecutive naturals, for example, 2537618 + ... + 2537651.

It is an arithmetic number, because the mean of its divisors is an integer number (22838715).

Almost surely, 2^86279573 is an apocalyptic number.

It is an amenable number.

86279573 is a deficient number, since it is larger than the sum of its proper divisors (5075287).

86279573 is a wasteful number, since it uses less digits than its factorization.

86279573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5075286.

The product of its digits is 635040, while the sum is 47.

The square root of 86279573 is about 9288.6798308479. The cubic root of 86279573 is about 441.8782876384.

The spelling of 86279573 in words is "eighty-six million, two hundred seventy-nine thousand, five hundred seventy-three".