86422729 has 8 divisors (see below), whose sum is σ = 87999912. Its totient is φ = 84856320.

The previous prime is 86422727. The next prime is 86422741. The reversal of 86422729 is 92722468.

It can be written as a sum of positive squares in 4 ways, for example, as 360000 + 86062729 = 600^2 + 9277^2 .

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 86422729 - 2¹ = 86422727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86422691 and 86422700.

It is not an unprimeable number, because it can be changed into a prime (86422727) 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, 14469 + ... + 19549.

It is an arithmetic number, because the mean of its divisors is an integer number (10999989).

Almost surely, 2^86422729 is an apocalyptic number.

It is an amenable number.

86422729 is a deficient number, since it is larger than the sum of its proper divisors (1577183).

86422729 is a wasteful number, since it uses less digits than its factorization.

86422729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387.

The product of its digits is 96768, while the sum is 40.

The square root of 86422729 is about 9296.3825760346. The cubic root of 86422729 is about 442.1225423417.

The spelling of 86422729 in words is "eighty-six million, four hundred twenty-two thousand, seven hundred twenty-nine".