9911994 has 16 divisors (see below), whose sum is σ = 19897920. Its totient is φ = 3291680.

The previous prime is 9911983. The next prime is 9912017. The reversal of 9911994 is 4991199.

It is an Ulam number.

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, 1254 + ... + 4625.

It is an arithmetic number, because the mean of its divisors is an integer number (1243620).

Almost surely, 2^9911994 is an apocalyptic number.

9911994 is an abundant number, since it is smaller than the sum of its proper divisors (9985926).

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

9911994 is a wasteful number, since it uses less digits than its factorization.

9911994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6165.

The product of its digits is 26244, while the sum is 42.

The square root of 9911994 is about 3148.3319392974. The cubic root of 9911994 is about 214.8095952630.

The spelling of 9911994 in words is "nine million, nine hundred eleven thousand, nine hundred ninety-four".