4409623 has 4 divisors (see below), whose sum is σ = 4528840. Its totient is φ = 4290408.

The previous prime is 4409611. The next prime is 4409633. The reversal of 4409623 is 3269044.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4409623 is a prime.

It is a Duffinian number.

4409623 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4409591 and 4409600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4409633) 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, 59553 + ... + 59626.

It is an arithmetic number, because the mean of its divisors is an integer number (1132210).

Almost surely, 2^4409623 is an apocalyptic number.

4409623 is a deficient number, since it is larger than the sum of its proper divisors (119217).

4409623 is a wasteful number, since it uses less digits than its factorization.

4409623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119216.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 4409623 is about 2099.9102361768. The cubic root of 4409623 is about 163.9836266620.

The spelling of 4409623 in words is "four million, four hundred nine thousand, six hundred twenty-three".