4728409 has 16 divisors (see below), whose sum is σ = 5778432. Its totient is φ = 3781008.

The previous prime is 4728403. The next prime is 4728413. The reversal of 4728409 is 9048274.

It is a happy number.

It is not a de Polignac number, because 4728409 - 2³ = 4728401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4728401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6582 + ... + 7264.

It is an arithmetic number, because the mean of its divisors is an integer number (361152).

Almost surely, 2^4728409 is an apocalyptic number.

It is an amenable number.

4728409 is a deficient number, since it is larger than the sum of its proper divisors (1050023).

4728409 is a wasteful number, since it uses less digits than its factorization.

4728409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 4728409 is about 2174.4905150402. The cubic root of 4728409 is about 167.8436872786.

The spelling of 4728409 in words is "four million, seven hundred twenty-eight thousand, four hundred nine".