86453221 has 4 divisors (see below), whose sum is σ = 87670944. Its totient is φ = 85235500.

The previous prime is 86453219. The next prime is 86453261. The reversal of 86453221 is 12235468.

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 not a de Polignac number, because 86453221 - 2¹ = 86453219 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86453261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608755 + ... + 608896.

It is an arithmetic number, because the mean of its divisors is an integer number (21917736).

Almost surely, 2^86453221 is an apocalyptic number.

It is an amenable number.

86453221 is a deficient number, since it is larger than the sum of its proper divisors (1217723).

86453221 is a wasteful number, since it uses less digits than its factorization.

86453221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217722.

The product of its digits is 11520, while the sum is 31.

The square root of 86453221 is about 9298.0224241502. The cubic root of 86453221 is about 442.1745333535.

Adding to 86453221 its reverse (12235468), we get a palindrome (98688689).

The spelling of 86453221 in words is "eighty-six million, four hundred fifty-three thousand, two hundred twenty-one".