86446221 has 4 divisors (see below), whose sum is σ = 115261632. Its totient is φ = 57630812.

The previous prime is 86446201. The next prime is 86446223. The reversal of 86446221 is 12264468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86446221 - 2⁷ = 86446093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86446223) 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, 14407701 + ... + 14407706.

It is an arithmetic number, because the mean of its divisors is an integer number (28815408).

Almost surely, 2^86446221 is an apocalyptic number.

It is an amenable number.

86446221 is a deficient number, since it is larger than the sum of its proper divisors (28815411).

86446221 is a wasteful number, since it uses less digits than its factorization.

86446221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28815410.

The product of its digits is 18432, while the sum is 33.

The square root of 86446221 is about 9297.6459924004. The cubic root of 86446221 is about 442.1625989407.

The spelling of 86446221 in words is "eighty-six million, four hundred forty-six thousand, two hundred twenty-one".