4752809 has 4 divisors (see below), whose sum is σ = 5032404. Its totient is φ = 4473216.

The previous prime is 4752791. The next prime is 4752817. The reversal of 4752809 is 9082574.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9082574 = 2 ⋅4541287.

It can be written as a sum of positive squares in 2 ways, for example, as 2334784 + 2418025 = 1528^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 4752809 - 2¹² = 4748713 is a prime.

It is a super-3 number, since 3×4752809³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4752899) 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, 139772 + ... + 139805.

It is an arithmetic number, because the mean of its divisors is an integer number (1258101).

Almost surely, 2^4752809 is an apocalyptic number.

It is an amenable number.

4752809 is a deficient number, since it is larger than the sum of its proper divisors (279595).

4752809 is a wasteful number, since it uses less digits than its factorization.

4752809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279594.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 4752809 is about 2180.0938053212. The cubic root of 4752809 is about 168.1318999117.

The spelling of 4752809 in words is "four million, seven hundred fifty-two thousand, eight hundred nine".