86240221 has 8 divisors (see below), whose sum is σ = 92059200. Its totient is φ = 80549280.

The previous prime is 86240213. The next prime is 86240227. The reversal of 86240221 is 12204268.

It is a happy number.

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 86240221 - 2³ = 86240213 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 (86240227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30616 + ... + 33313.

It is an arithmetic number, because the mean of its divisors is an integer number (11507400).

Almost surely, 2^86240221 is an apocalyptic number.

It is an amenable number.

86240221 is a deficient number, since it is larger than the sum of its proper divisors (5818979).

86240221 is a wasteful number, since it uses less digits than its factorization.

86240221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64019.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 86240221 is about 9286.5613119173. The cubic root of 86240221 is about 441.8110973866.

Adding to 86240221 its reverse (12204268), we get a palindrome (98444489).

The spelling of 86240221 in words is "eighty-six million, two hundred forty thousand, two hundred twenty-one".