8216079993 has 32 divisors (see below), whose sum is σ = 13460446080. Its totient is φ = 4911217920.

The previous prime is 8216079983. The next prime is 8216080021. The reversal of 8216079993 is 3999706128.

8216079993 is a `hidden beast` number, since 8 + 21 + 607 + 9 + 9 + 9 + 3 = 666.

It is not a de Polignac number, because 8216079993 - 2⁸ = 8216079737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8216079943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167796 + ... + 211157.

It is an arithmetic number, because the mean of its divisors is an integer number (420638940).

Almost surely, 2^8216079993 is an apocalyptic number.

It is an amenable number.

8216079993 is a deficient number, since it is larger than the sum of its proper divisors (5244366087).

8216079993 is a wasteful number, since it uses less digits than its factorization.

8216079993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379046 (or 379040 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 8216079993 is about 90642.5948050915. The cubic root of 8216079993 is about 2017.8469358174.

The spelling of 8216079993 in words is "eight billion, two hundred sixteen million, seventy-nine thousand, nine hundred ninety-three".