9912991846 has 16 divisors (see below), whose sum is σ = 15216238800. Its totient is φ = 4841729568.

The previous prime is 9912991841. The next prime is 9912991877. The reversal of 9912991846 is 6481992199.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9912991841) 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, 179916 + ... + 228463.

It is an arithmetic number, because the mean of its divisors is an integer number (951014925).

Almost surely, 2^9912991846 is an apocalyptic number.

9912991846 is a deficient number, since it is larger than the sum of its proper divisors (5303246954).

9912991846 is a wasteful number, since it uses less digits than its factorization.

9912991846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408663.

The product of its digits is 2519424, while the sum is 58.

The square root of 9912991846 is about 99564.0087883167. The cubic root of 9912991846 is about 2148.1680335530.

The spelling of 9912991846 in words is "nine billion, nine hundred twelve million, nine hundred ninety-one thousand, eight hundred forty-six".