8404673994 has 64 divisors (see below), whose sum is σ = 18969552000. Its totient is φ = 2758003200.

The previous prime is 8404673993. The next prime is 8404674011. The reversal of 8404673994 is 4993764048.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 8404673994.

It is not an unprimeable number, because it can be changed into a prime (8404673993) 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 31 ways as a sum of consecutive naturals, for example, 971962 + ... + 980570.

It is an arithmetic number, because the mean of its divisors is an integer number (296399250).

Almost surely, 2^8404673994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8404673994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9484776000).

8404673994 is an abundant number, since it is smaller than the sum of its proper divisors (10564878006).

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

8404673994 is a wasteful number, since it uses less digits than its factorization.

8404673994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8900 (or 8894 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The square root of 8404673994 is about 91677.0090807941. The cubic root of 8404673994 is about 2033.1696778851.

The spelling of 8404673994 in words is "eight billion, four hundred four million, six hundred seventy-three thousand, nine hundred ninety-four".