4408321 has 8 divisors (see below), whose sum is σ = 4690440. Its totient is φ = 4128768.

The previous prime is 4408309. The next prime is 4408331. The reversal of 4408321 is 1238044.

It can be written as a sum of positive squares in 4 ways, for example, as 2143296 + 2265025 = 1464^2 + 1505^2 .

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

It is a 2-Lehmer number, since φ(4408321) divides (4408321-1)².

It is a cyclic number.

It is not a de Polignac number, because 4408321 - 2⁵ = 4408289 is a prime.

It is a Duffinian number.

4408321 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4408292 and 4408301.

It is not an unprimeable number, because it can be changed into a prime (4408301) 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, 3865 + ... + 4873.

It is an arithmetic number, because the mean of its divisors is an integer number (586305).

Almost surely, 2^4408321 is an apocalyptic number.

It is an amenable number.

4408321 is a deficient number, since it is larger than the sum of its proper divisors (282119).

4408321 is a wasteful number, since it uses less digits than its factorization.

4408321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 4408321 is about 2099.6002000381. The cubic root of 4408321 is about 163.9674856224.

It can be divided in two parts, 4 and 408321, that multiplied together give a square (1633284 = 1278²).

The spelling of 4408321 in words is "four million, four hundred eight thousand, three hundred twenty-one".