9991924446 has 32 divisors (see below), whose sum is σ = 23095307520. Its totient is φ = 2822757696.

The previous prime is 9991924441. The next prime is 9991924447. The reversal of 9991924446 is 6444291999.

9991924446 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 (9991924441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1332796 + ... + 1340271.

It is an arithmetic number, because the mean of its divisors is an integer number (721728360).

Almost surely, 2^9991924446 is an apocalyptic number.

9991924446 is an abundant number, since it is smaller than the sum of its proper divisors (13103383074).

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

9991924446 is a wasteful number, since it uses less digits than its factorization.

9991924446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673168.

The product of its digits is 5038848, while the sum is 57.

The square root of 9991924446 is about 99959.6140748853. The cubic root of 9991924446 is about 2153.8545920608.

The spelling of 9991924446 in words is "nine billion, nine hundred ninety-one million, nine hundred twenty-four thousand, four hundred forty-six".