4400505 has 12 divisors (see below), whose sum is σ = 7627620. Its totient is φ = 2346912.

The previous prime is 4400503. The next prime is 4400507. The reversal of 4400505 is 5050044.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4400503) and next prime (4400507).

It can be written as a sum of positive squares in 2 ways, for example, as 1929321 + 2471184 = 1389^2 + 1572^2 .

It is not a de Polignac number, because 4400505 - 2¹ = 4400503 is a prime.

It is an Ulam number.

4400505 is a modest number, since divided by 505 gives 440 as remainder.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4400503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48850 + ... + 48939.

It is an arithmetic number, because the mean of its divisors is an integer number (635635).

Almost surely, 2^4400505 is an apocalyptic number.

4400505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4400505 is a deficient number, since it is larger than the sum of its proper divisors (3227115).

4400505 is a wasteful number, since it uses less digits than its factorization.

4400505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97800 (or 97797 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 4400505 is about 2097.7380675385. The cubic root of 4400505 is about 163.8705229294.

Adding to 4400505 its reverse (5050044), we get a palindrome (9450549).

The spelling of 4400505 in words is "four million, four hundred thousand, five hundred five".