991048084 has 24 divisors (see below), whose sum is σ = 1874663168. Its totient is φ = 455712480.

The previous prime is 991048067. The next prime is 991048087. The reversal of 991048084 is 480840199.

It is a self number, because there is not a number n which added to its sum of digits gives 991048084.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (991048087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21072 + ... + 49255.

Almost surely, 2^991048084 is an apocalyptic number.

It is an amenable number.

991048084 is a deficient number, since it is larger than the sum of its proper divisors (883615084).

991048084 is a wasteful number, since it uses less digits than its factorization.

991048084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70615 (or 70613 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 991048084 is about 31480.9161874301. The cubic root of 991048084 is about 997.0070793625.

The spelling of 991048084 in words is "nine hundred ninety-one million, forty-eight thousand, eighty-four".