8390994216 has 32 divisors (see below), whose sum is σ = 22884530400. Its totient is φ = 2542725440.

The previous prime is 8390994197. The next prime is 8390994217. The reversal of 8390994216 is 6124990938.

It is not an unprimeable number, because it can be changed into a prime (8390994217) 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, 15891771 + ... + 15892298.

It is an arithmetic number, because the mean of its divisors is an integer number (715141575).

Almost surely, 2^8390994216 is an apocalyptic number.

It is an amenable number.

8390994216 is an abundant number, since it is smaller than the sum of its proper divisors (14493536184).

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

8390994216 is a wasteful number, since it uses less digits than its factorization.

8390994216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31784089 (or 31784085 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 8390994216 is about 91602.3701440088. The cubic root of 8390994216 is about 2032.0659898848.

The spelling of 8390994216 in words is "eight billion, three hundred ninety million, nine hundred ninety-four thousand, two hundred sixteen".