5199379821 has 16 divisors (see below), whose sum is σ = 7711113600. Its totient is φ = 3462505344.

The previous prime is 5199379819. The next prime is 5199379831. The reversal of 5199379821 is 1289739915.

5199379821 is a `hidden beast` number, since 5 + 199 + 379 + 82 + 1 = 666.

It is not a de Polignac number, because 5199379821 - 2¹ = 5199379819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5199379831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78561 + ... + 128726.

It is an arithmetic number, because the mean of its divisors is an integer number (481944600).

Almost surely, 2^5199379821 is an apocalyptic number.

It is an amenable number.

5199379821 is a deficient number, since it is larger than the sum of its proper divisors (2511733779).

5199379821 is a wasteful number, since it uses less digits than its factorization.

5199379821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208225 (or 208219 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 5199379821 is about 72106.7252133946. The cubic root of 5199379821 is about 1732.4093331612.

The spelling of 5199379821 in words is "five billion, one hundred ninety-nine million, three hundred seventy-nine thousand, eight hundred twenty-one".