4144009 has 4 divisors (see below), whose sum is σ = 4162816. Its totient is φ = 4125204.

The previous prime is 4144001. The next prime is 4144031. The reversal of 4144009 is 9004414.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9004414 = 2 ⋅4502207.

It is a cyclic number.

It is not a de Polignac number, because 4144009 - 2³ = 4144001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4144001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9069 + ... + 9514.

It is an arithmetic number, because the mean of its divisors is an integer number (1040704).

Almost surely, 2^4144009 is an apocalyptic number.

It is an amenable number.

4144009 is a deficient number, since it is larger than the sum of its proper divisors (18807).

4144009 is a wasteful number, since it uses less digits than its factorization.

4144009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18806.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 4144009 is about 2035.6839145604. The cubic root of 4144009 is about 160.6226906459.

The spelling of 4144009 in words is "four million, one hundred forty-four thousand, nine".