4398505 has 4 divisors (see below), whose sum is σ = 5278212. Its totient is φ = 3518800.

The previous prime is 4398503. The next prime is 4398553. The reversal of 4398505 is 5058934.

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 3225616 + 1172889 = 1796^2 + 1083^2 .

It is not a de Polignac number, because 4398505 - 2¹ = 4398503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4398503) 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 3 ways as a sum of consecutive naturals, for example, 439846 + ... + 439855.

It is an arithmetic number, because the mean of its divisors is an integer number (1319553).

Almost surely, 2^4398505 is an apocalyptic number.

It is an amenable number.

4398505 is a deficient number, since it is larger than the sum of its proper divisors (879707).

4398505 is an equidigital number, since it uses as much as digits as its factorization.

4398505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879706.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 4398505 is about 2097.2613094224. The cubic root of 4398505 is about 163.8456931496.

The spelling of 4398505 in words is "four million, three hundred ninety-eight thousand, five hundred five".