84446321 has 4 divisors (see below), whose sum is σ = 86728692. Its totient is φ = 82163952.

The previous prime is 84446311. The next prime is 84446359. The reversal of 84446321 is 12364448.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49210225 + 35236096 = 7015^2 + 5936^2 .

It is a cyclic number.

It is not a de Polignac number, because 84446321 - 2¹⁰ = 84445297 is a prime.

It is a super-2 number, since 2×84446321² = 14262362260870082, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84446311) 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, 1141130 + ... + 1141203.

It is an arithmetic number, because the mean of its divisors is an integer number (21682173).

Almost surely, 2^84446321 is an apocalyptic number.

It is an amenable number.

84446321 is a deficient number, since it is larger than the sum of its proper divisors (2282371).

84446321 is a wasteful number, since it uses less digits than its factorization.

84446321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282370.

The product of its digits is 18432, while the sum is 32.

The square root of 84446321 is about 9189.4679388961. The cubic root of 84446321 is about 438.7262074798.

The spelling of 84446321 in words is "eighty-four million, four hundred forty-six thousand, three hundred twenty-one".