4085786879 has 4 divisors (see below), whose sum is σ = 4086610176. Its totient is φ = 4084963584.

The previous prime is 4085786869. The next prime is 4085786911. The reversal of 4085786879 is 9786875804.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4085786879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4085786819) 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, 404159 + ... + 414144.

It is an arithmetic number, because the mean of its divisors is an integer number (1021652544).

Almost surely, 2^4085786879 is an apocalyptic number.

4085786879 is a deficient number, since it is larger than the sum of its proper divisors (823297).

4085786879 is an equidigital number, since it uses as much as digits as its factorization.

4085786879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823296.

The product of its (nonzero) digits is 27095040, while the sum is 62.

The square root of 4085786879 is about 63920.1601922273. The cubic root of 4085786879 is about 1598.6690597172.

The spelling of 4085786879 in words is "four billion, eighty-five million, seven hundred eighty-six thousand, eight hundred seventy-nine".