4420145 has 4 divisors (see below), whose sum is σ = 5304180. Its totient is φ = 3536112.

The previous prime is 4420139. The next prime is 4420159. The reversal of 4420145 is 5410244.

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 1183744 + 3236401 = 1088^2 + 1799^2 .

It is a cyclic number.

It is not a de Polignac number, because 4420145 - 2⁶ = 4420081 is a prime.

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, 442010 + ... + 442019.

It is an arithmetic number, because the mean of its divisors is an integer number (1326045).

Almost surely, 2^4420145 is an apocalyptic number.

It is an amenable number.

4420145 is a deficient number, since it is larger than the sum of its proper divisors (884035).

4420145 is an equidigital number, since it uses as much as digits as its factorization.

4420145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884034.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 4420145 is about 2102.4140886134. The cubic root of 4420145 is about 164.1139526299.

Adding to 4420145 its reverse (5410244), we get a palindrome (9830389).

Subtracting 4420145 from its reverse (5410244), we obtain a palindrome (990099).

The spelling of 4420145 in words is "four million, four hundred twenty thousand, one hundred forty-five".