8390990938 has 16 divisors (see below), whose sum is σ = 14453382240. Its totient is φ = 3613345200.

The previous prime is 8390990921. The next prime is 8390990953.

8390990938 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10036653 + ... + 10037488.

It is an arithmetic number, because the mean of its divisors is an integer number (903336390).

Almost surely, 2^8390990938 is an apocalyptic number.

8390990938 is a deficient number, since it is larger than the sum of its proper divisors (6062391302).

8390990938 is a wasteful number, since it uses less digits than its factorization.

8390990938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20074173.

The product of its (nonzero) digits is 3779136, while the sum is 58.

The square root of 8390990938 is about 91602.3522514569. The cubic root of 8390990938 is about 2032.0657252712.

The spelling of 8390990938 in words is "eight billion, three hundred ninety million, nine hundred ninety thousand, nine hundred thirty-eight".