5623409 has 16 divisors (see below), whose sum is σ = 6393600. Its totient is φ = 4901760.

The previous prime is 5623403. The next prime is 5623421. The reversal of 5623409 is 9043265.

5623409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 5623409 - 2⁴ = 5623393 is a prime.

It is an Ulam number.

It is a deceptive number, since it divides R_5623408.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5623403) 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 15 ways as a sum of consecutive naturals, for example, 37667 + ... + 37815.

It is an arithmetic number, because the mean of its divisors is an integer number (399600).

Almost surely, 2^5623409 is an apocalyptic number.

It is an amenable number.

5623409 is a deficient number, since it is larger than the sum of its proper divisors (770191).

5623409 is a wasteful number, since it uses less digits than its factorization.

5623409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 5623409 is about 2371.3728091551. The cubic root of 5623409 is about 177.8278961849.

The spelling of 5623409 in words is "five million, six hundred twenty-three thousand, four hundred nine".