4423409 has 4 divisors (see below), whose sum is σ = 4656240. Its totient is φ = 4190580.

The previous prime is 4423403. The next prime is 4423411. The reversal of 4423409 is 9043244.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4423409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4423403) 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, 116387 + ... + 116424.

It is an arithmetic number, because the mean of its divisors is an integer number (1164060).

Almost surely, 2^4423409 is an apocalyptic number.

It is an amenable number.

4423409 is a deficient number, since it is larger than the sum of its proper divisors (232831).

4423409 is a wasteful number, since it uses less digits than its factorization.

4423409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232830.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 4423409 is about 2103.1901958691. The cubic root of 4423409 is about 164.1543386461.

The spelling of 4423409 in words is "four million, four hundred twenty-three thousand, four hundred nine".