991298330 has 16 divisors (see below), whose sum is σ = 1946549664. Its totient is φ = 360472080.

The previous prime is 991298323. The next prime is 991298333. The reversal of 991298330 is 33892199.

It is not an unprimeable number, because it can be changed into a prime (991298333) 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, 4505792 + ... + 4506011.

It is an arithmetic number, because the mean of its divisors is an integer number (121659354).

Almost surely, 2^991298330 is an apocalyptic number.

991298330 is a deficient number, since it is larger than the sum of its proper divisors (955251334).

991298330 is a wasteful number, since it uses less digits than its factorization.

991298330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9011821.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 991298330 is about 31484.8905032239. The cubic root of 991298330 is about 997.0909891952.

The spelling of 991298330 in words is "nine hundred ninety-one million, two hundred ninety-eight thousand, three hundred thirty".