4082806821 has 8 divisors (see below), whose sum is σ = 5512650880. Its totient is φ = 2687416992.

The previous prime is 4082806817. The next prime is 4082806831. The reversal of 4082806821 is 1286082804.

4082806821 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 4082806821 - 2² = 4082806817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4082806821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4082806831) 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, 8613280 + ... + 8613753.

It is an arithmetic number, because the mean of its divisors is an integer number (689081360).

Almost surely, 2^4082806821 is an apocalyptic number.

It is an amenable number.

4082806821 is a deficient number, since it is larger than the sum of its proper divisors (1429844059).

4082806821 is a wasteful number, since it uses less digits than its factorization.

4082806821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17227115.

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 4082806821 is about 63896.8451568620. The cubic root of 4082806821 is about 1598.2802904377.

The spelling of 4082806821 in words is "four billion, eighty-two million, eight hundred six thousand, eight hundred twenty-one".