4445456321 has 8 divisors (see below), whose sum is σ = 4504012800. Its totient is φ = 4386957120.

The previous prime is 4445456297. The next prime is 4445456341. The reversal of 4445456321 is 1236545444.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4445456321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4445456341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154976 + ... + 181406.

It is an arithmetic number, because the mean of its divisors is an integer number (563001600).

Almost surely, 2^4445456321 is an apocalyptic number.

It is an amenable number.

4445456321 is a deficient number, since it is larger than the sum of its proper divisors (58556479).

4445456321 is a wasteful number, since it uses less digits than its factorization.

4445456321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28639.

The product of its digits is 230400, while the sum is 38.

The square root of 4445456321 is about 66674.2553089271. The cubic root of 4445456321 is about 1644.2661485279.

The spelling of 4445456321 in words is "four billion, four hundred forty-five million, four hundred fifty-six thousand, three hundred twenty-one".