4401605 has 12 divisors (see below), whose sum is σ = 5720580. Its totient is φ = 3249792.

The previous prime is 4401601. The next prime is 4401641. The reversal of 4401605 is 5061044.

It is a happy number.

It is a Cunningham number, because it is equal to 2098²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 83521 + 4318084 = 289^2 + 2078^2 .

It is not a de Polignac number, because 4401605 - 2² = 4401601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4401601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1760 + ... + 3449.

It is an arithmetic number, because the mean of its divisors is an integer number (476715).

Almost surely, 2^4401605 is an apocalyptic number.

It is an amenable number.

4401605 is a deficient number, since it is larger than the sum of its proper divisors (1318975).

4401605 is a wasteful number, since it uses less digits than its factorization.

4401605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5240 (or 5227 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 4401605 is about 2098.0002383222. Note that the first 3 decimals coincide. The cubic root of 4401605 is about 163.8841761016.

Adding to 4401605 its reverse (5061044), we get a palindrome (9462649).

The spelling of 4401605 in words is "four million, four hundred one thousand, six hundred five".