4085745 has 8 divisors (see below), whose sum is σ = 6537216. Its totient is φ = 2179056.

The previous prime is 4085699. The next prime is 4085747. The reversal of 4085745 is 5475804.

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

It is not a de Polignac number, because 4085745 - 2⁸ = 4085489 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (4085747) 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, 136177 + ... + 136206.

It is an arithmetic number, because the mean of its divisors is an integer number (817152).

Almost surely, 2^4085745 is an apocalyptic number.

It is an amenable number.

4085745 is a deficient number, since it is larger than the sum of its proper divisors (2451471).

4085745 is a wasteful number, since it uses less digits than its factorization.

4085745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272391.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 4085745 is about 2021.3225868228. The cubic root of 4085745 is about 159.8663597620.

The spelling of 4085745 in words is "four million, eighty-five thousand, seven hundred forty-five".