993809994 has 16 divisors (see below), whose sum is σ = 1990934400. Its totient is φ = 330717600.

The previous prime is 993809963. The next prime is 993810001. The reversal of 993809994 is 499908399.

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, 134194 + ... + 141405.

It is an arithmetic number, because the mean of its divisors is an integer number (124433400).

Almost surely, 2^993809994 is an apocalyptic number.

993809994 is an abundant number, since it is smaller than the sum of its proper divisors (997124406).

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

993809994 is a wasteful number, since it uses less digits than its factorization.

993809994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276205.

The product of its (nonzero) digits is 5668704, while the sum is 60.

The square root of 993809994 is about 31524.7520846715. The cubic root of 993809994 is about 997.9323926127.

The spelling of 993809994 in words is "nine hundred ninety-three million, eight hundred nine thousand, nine hundred ninety-four".