4445409 has 8 divisors (see below), whose sum is σ = 6002560. Its totient is φ = 2925936.

The previous prime is 4445393. The next prime is 4445429. The reversal of 4445409 is 9045444.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4445409 - 2⁴ = 4445393 is a prime.

It is a super-2 number, since 2×4445409² = 39523322354562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4445429) 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 7 ways as a sum of consecutive naturals, for example, 9142 + ... + 9615.

It is an arithmetic number, because the mean of its divisors is an integer number (750320).

Almost surely, 2^4445409 is an apocalyptic number.

It is an amenable number.

4445409 is a deficient number, since it is larger than the sum of its proper divisors (1557151).

4445409 is a wasteful number, since it uses less digits than its factorization.

4445409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18839.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 4445409 is about 2108.4138588048. The cubic root of 4445409 is about 164.4260314212.

The spelling of 4445409 in words is "four million, four hundred forty-five thousand, four hundred nine".