8216399376 has 160 divisors (see below), whose sum is σ = 24739130880. Its totient is φ = 2607842304.

The previous prime is 8216399369. The next prime is 8216399377. The reversal of 8216399376 is 6739936128.

8216399376 is a `hidden beast` number, since 8 + 216 + 399 + 37 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8216399377) 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, 745780 + ... + 756716.

It is an arithmetic number, because the mean of its divisors is an integer number (154619568).

Almost surely, 2^8216399376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8216399376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12369565440).

8216399376 is an abundant number, since it is smaller than the sum of its proper divisors (16522731504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8216399376 is a wasteful number, since it uses less digits than its factorization.

8216399376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11038 (or 11026 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 8216399376 is about 90644.3565590269. The cubic root of 8216399376 is about 2017.8730820111.

The spelling of 8216399376 in words is "eight billion, two hundred sixteen million, three hundred ninety-nine thousand, three hundred seventy-six".