4402327021 has 16 divisors (see below), whose sum is σ = 4700417904. Its totient is φ = 4108713984.

The previous prime is 4402327009. The next prime is 4402327043. The reversal of 4402327021 is 1207232044.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 121242121 + 4281084900 = 11011^2 + 65430^2 .

It is a cyclic number.

It is not a de Polignac number, because 4402327021 - 2¹⁷ = 4402195949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4402927021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1271725 + ... + 1275181.

It is an arithmetic number, because the mean of its divisors is an integer number (293776119).

Almost surely, 2^4402327021 is an apocalyptic number.

It is an amenable number.

4402327021 is a deficient number, since it is larger than the sum of its proper divisors (298090883).

4402327021 is a wasteful number, since it uses less digits than its factorization.

4402327021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 4402327021 is about 66350.0340693206. The cubic root of 4402327021 is about 1638.9313657152.

Adding to 4402327021 its reverse (1207232044), we get a palindrome (5609559065).

The spelling of 4402327021 in words is "four billion, four hundred two million, three hundred twenty-seven thousand, twenty-one".