4084555861 has 4 divisors (see below), whose sum is σ = 4086928192. Its totient is φ = 4082183532.

The previous prime is 4084555807. The next prime is 4084555873. The reversal of 4084555861 is 1685554804.

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.

It is a cyclic number.

It is not a de Polignac number, because 4084555861 - 2²⁵ = 4051001429 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 (4084555361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183581 + ... + 1187026.

It is an arithmetic number, because the mean of its divisors is an integer number (1021732048).

Almost surely, 2^4084555861 is an apocalyptic number.

It is an amenable number.

4084555861 is a deficient number, since it is larger than the sum of its proper divisors (2372331).

4084555861 is a wasteful number, since it uses less digits than its factorization.

4084555861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372330.

The product of its (nonzero) digits is 768000, while the sum is 46.

The square root of 4084555861 is about 63910.5301261068. The cubic root of 4084555861 is about 1598.5084877860.

The spelling of 4084555861 in words is "four billion, eighty-four million, five hundred fifty-five thousand, eight hundred sixty-one".