4509905 has 8 divisors (see below), whose sum is σ = 5443200. Its totient is φ = 3587056.

The previous prime is 4509899. The next prime is 4509907. The reversal of 4509905 is 5099054.

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

It is a cyclic number.

It is not a de Polignac number, because 4509905 - 2⁴ = 4509889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4509907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1625 + ... + 3414.

It is an arithmetic number, because the mean of its divisors is an integer number (680400).

Almost surely, 2^4509905 is an apocalyptic number.

It is an amenable number.

4509905 is a deficient number, since it is larger than the sum of its proper divisors (933295).

4509905 is a wasteful number, since it uses less digits than its factorization.

4509905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5223.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 4509905 is about 2123.6536911653. The cubic root of 4509905 is about 165.2174054910.

The spelling of 4509905 in words is "four million, five hundred nine thousand, nine hundred five".