86344221 has 8 divisors (see below), whose sum is σ = 115629280. Its totient is φ = 57310992.

The previous prime is 86344213. The next prime is 86344229. The reversal of 86344221 is 12244368.

It is an interprime number because it is at equal distance from previous prime (86344213) and next prime (86344229).

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

It is not a de Polignac number, because 86344221 - 2³ = 86344213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86344229) 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 7 ways as a sum of consecutive naturals, for example, 62155 + ... + 63528.

It is an arithmetic number, because the mean of its divisors is an integer number (14453660).

Almost surely, 2^86344221 is an apocalyptic number.

It is an amenable number.

86344221 is a deficient number, since it is larger than the sum of its proper divisors (29285059).

86344221 is a wasteful number, since it uses less digits than its factorization.

86344221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125915.

The product of its digits is 9216, while the sum is 30.

The square root of 86344221 is about 9292.1591140057. The cubic root of 86344221 is about 441.9886243600.

Adding to 86344221 its reverse (12244368), we get a palindrome (98588589).

The spelling of 86344221 in words is "eighty-six million, three hundred forty-four thousand, two hundred twenty-one".