4398445 has 4 divisors (see below), whose sum is σ = 5278140. Its totient is φ = 3518752.

The previous prime is 4398431. The next prime is 4398463. The reversal of 4398445 is 5448934.

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 2499561 + 1898884 = 1581^2 + 1378^2 .

It is a cyclic number.

It is not a de Polignac number, because 4398445 - 2⁹ = 4397933 is a prime.

It is an Ulam number.

4398445 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439840 + ... + 439849.

It is an arithmetic number, because the mean of its divisors is an integer number (1319535).

Almost surely, 2^4398445 is an apocalyptic number.

It is an amenable number.

4398445 is a deficient number, since it is larger than the sum of its proper divisors (879695).

4398445 is an equidigital number, since it uses as much as digits as its factorization.

4398445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879694.

The product of its digits is 69120, while the sum is 37.

The square root of 4398445 is about 2097.2470050044. The cubic root of 4398445 is about 163.8449481400.

The spelling of 4398445 in words is "four million, three hundred ninety-eight thousand, four hundred forty-five".