86000021 has 8 divisors (see below), whose sum is σ = 86631360. Its totient is φ = 85371552.

The previous prime is 86000009. The next prime is 86000053. The reversal of 86000021 is 12000068.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86000021 is a prime.

It is a super-2 number, since 2×86000021² = 14792007224000882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86000071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115376 + ... + 116118.

It is an arithmetic number, because the mean of its divisors is an integer number (10828920).

Almost surely, 2^86000021 is an apocalyptic number.

It is an amenable number.

86000021 is a deficient number, since it is larger than the sum of its proper divisors (631339).

86000021 is a wasteful number, since it uses less digits than its factorization.

86000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 86000021 is about 9273.6196277398. The cubic root of 86000021 is about 441.4005321722.

Adding to 86000021 its reverse (12000068), we get a palindrome (98000089).

The spelling of 86000021 in words is "eighty-six million, twenty-one", and thus it is an aban number and an uban number.