4085787 has 4 divisors (see below), whose sum is σ = 5447720. Its totient is φ = 2723856.

The previous prime is 4085777. The next prime is 4085791. The reversal of 4085787 is 7875804.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4085787 - 2⁴ = 4085771 is a prime.

It is a D-number.

It is a Duffinian number.

4085787 is a lucky 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 3 ways as a sum of consecutive naturals, for example, 680962 + ... + 680967.

It is an arithmetic number, because the mean of its divisors is an integer number (1361930).

Almost surely, 2^4085787 is an apocalyptic number.

4085787 is a deficient number, since it is larger than the sum of its proper divisors (1361933).

4085787 is a wasteful number, since it uses less digits than its factorization.

4085787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361932.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 4085787 is about 2021.3329760334. The cubic root of 4085787 is about 159.8669075499.

The spelling of 4085787 in words is "four million, eighty-five thousand, seven hundred eighty-seven".