4445669 has 4 divisors (see below), whose sum is σ = 4449900. Its totient is φ = 4441440.

The previous prime is 4445663. The next prime is 4445681. The reversal of 4445669 is 9665444.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3150625 + 1295044 = 1775^2 + 1138^2 .

It is a cyclic number.

It is not a de Polignac number, because 4445669 - 2¹⁶ = 4380133 is a prime.

It is a super-2 number, since 2×4445669² = 39527945715122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4445663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809 + ... + 3089.

It is an arithmetic number, because the mean of its divisors is an integer number (1112475).

Almost surely, 2^4445669 is an apocalyptic number.

It is an amenable number.

4445669 is a deficient number, since it is larger than the sum of its proper divisors (4231).

4445669 is a wasteful number, since it uses less digits than its factorization.

4445669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4230.

The product of its digits is 103680, while the sum is 38.

The square root of 4445669 is about 2108.4755156273. The cubic root of 4445669 is about 164.4292369706.

The spelling of 4445669 in words is "four million, four hundred forty-five thousand, six hundred sixty-nine".