4400030321 has 4 divisors (see below), whose sum is σ = 4658855652. Its totient is φ = 4141204992.

The previous prime is 4400030309. The next prime is 4400030377. The reversal of 4400030321 is 1230300044.

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 2464030321 + 1936000000 = 49639^2 + 44000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4400030321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 258825313 = 4400030321 / (4 + 4 + 0 + 0 + 0 + 3 + 0 + 3 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4400030321.

It is not an unprimeable number, because it can be changed into a prime (4400030381) 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, 129412640 + ... + 129412673.

It is an arithmetic number, because the mean of its divisors is an integer number (1164713913).

Almost surely, 2^4400030321 is an apocalyptic number.

It is an amenable number.

4400030321 is a deficient number, since it is larger than the sum of its proper divisors (258825331).

4400030321 is a wasteful number, since it uses less digits than its factorization.

4400030321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258825330.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 4400030321 is about 66332.7243598512. The cubic root of 4400030321 is about 1638.6463052290.

Adding to 4400030321 its reverse (1230300044), we get a palindrome (5630330365).

The spelling of 4400030321 in words is "four billion, four hundred million, thirty thousand, three hundred twenty-one".