9991484 has 6 divisors (see below), whose sum is σ = 17485104. Its totient is φ = 4995740.

The previous prime is 9991469. The next prime is 9991489. The reversal of 9991484 is 4841999.

9991484 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9991489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248932 + ... + 1248939.

It is an arithmetic number, because the mean of its divisors is an integer number (2914184).

Almost surely, 2^9991484 is an apocalyptic number.

It is an amenable number.

9991484 is a deficient number, since it is larger than the sum of its proper divisors (7493620).

9991484 is a wasteful number, since it uses less digits than its factorization.

9991484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497875 (or 2497873 counting only the distinct ones).

The product of its digits is 93312, while the sum is 44.

The square root of 9991484 is about 3160.9308755492. The cubic root of 9991484 is about 215.3822944151.

The spelling of 9991484 in words is "nine million, nine hundred ninety-one thousand, four hundred eighty-four".