8393949494 has 16 divisors (see below), whose sum is σ = 14432335008. Its totient is φ = 3586730112.

The previous prime is 8393949493. The next prime is 8393949497. The reversal of 8393949494 is 4949493938.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8393949491) 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, 884849 + ... + 894284.

It is an arithmetic number, because the mean of its divisors is an integer number (902020938).

Almost surely, 2^8393949494 is an apocalyptic number.

8393949494 is a deficient number, since it is larger than the sum of its proper divisors (6038385514).

8393949494 is a wasteful number, since it uses less digits than its factorization.

8393949494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779479.

The product of its digits is 30233088, while the sum is 62.

The square root of 8393949494 is about 91618.4997366798. The cubic root of 8393949494 is about 2032.3045239957.

The spelling of 8393949494 in words is "eight billion, three hundred ninety-three million, nine hundred forty-nine thousand, four hundred ninety-four".