4813439821 has 8 divisors (see below), whose sum is σ = 4838304704. Its totient is φ = 4788594720.

The previous prime is 4813439809. The next prime is 4813439837. The reversal of 4813439821 is 1289343184.

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

It is a cyclic number.

It is not a de Polignac number, because 4813439821 - 2⁷ = 4813439693 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 (4813439861) 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, 853216 + ... + 858838.

It is an arithmetic number, because the mean of its divisors is an integer number (604788088).

Almost surely, 2^4813439821 is an apocalyptic number.

It is an amenable number.

4813439821 is a deficient number, since it is larger than the sum of its proper divisors (24864883).

4813439821 is a wasteful number, since it uses less digits than its factorization.

4813439821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9891.

The product of its digits is 165888, while the sum is 43.

The square root of 4813439821 is about 69378.9580564597. The cubic root of 4813439821 is about 1688.4382501502.

The spelling of 4813439821 in words is "four billion, eight hundred thirteen million, four hundred thirty-nine thousand, eight hundred twenty-one".