4785409 has 4 divisors (see below), whose sum is σ = 4790016. Its totient is φ = 4780804.

The previous prime is 4785401. The next prime is 4785419. The reversal of 4785409 is 9045874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9045874 = 2 ⋅4522937.

It is a cyclic number.

It is not a de Polignac number, because 4785409 - 2³ = 4785401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4785401) 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, 72 + ... + 3094.

It is an arithmetic number, because the mean of its divisors is an integer number (1197504).

Almost surely, 2^4785409 is an apocalyptic number.

It is an amenable number.

4785409 is a deficient number, since it is larger than the sum of its proper divisors (4607).

4785409 is a wasteful number, since it uses less digits than its factorization.

4785409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4606.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 4785409 is about 2187.5577706657. The cubic root of 4785409 is about 168.5154356037.

The spelling of 4785409 in words is "four million, seven hundred eighty-five thousand, four hundred nine".