4144445 has 4 divisors (see below), whose sum is σ = 4973340. Its totient is φ = 3315552.

The previous prime is 4144423. The next prime is 4144457. The reversal of 4144445 is 5444414.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5444414 = 2 ⋅2722207.

It can be written as a sum of positive squares in 2 ways, for example, as 857476 + 3286969 = 926^2 + 1813^2 .

It is a cyclic number.

It is not a de Polignac number, because 4144445 - 2¹⁰ = 4143421 is a prime.

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, 414440 + ... + 414449.

It is an arithmetic number, because the mean of its divisors is an integer number (1243335).

Almost surely, 2^4144445 is an apocalyptic number.

It is an amenable number.

4144445 is a deficient number, since it is larger than the sum of its proper divisors (828895).

4144445 is an equidigital number, since it uses as much as digits as its factorization.

4144445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828894.

The product of its digits is 5120, while the sum is 26.

The square root of 4144445 is about 2035.7910010608. The cubic root of 4144445 is about 160.6283236000.

Adding to 4144445 its reverse (5444414), we get a palindrome (9588859).

The spelling of 4144445 in words is "four million, one hundred forty-four thousand, four hundred forty-five".