99991330 has 16 divisors (see below), whose sum is σ = 180247680. Its totient is φ = 39938032.

The previous prime is 99991303. The next prime is 99991343. The reversal of 99991330 is 3319999.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 237 + ... + 14143.

It is an arithmetic number, because the mean of its divisors is an integer number (11265480).

Almost surely, 2^99991330 is an apocalyptic number.

99991330 is a deficient number, since it is larger than the sum of its proper divisors (80256350).

99991330 is a wasteful number, since it uses less digits than its factorization.

99991330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14633.

The product of its (nonzero) digits is 59049, while the sum is 43.

The square root of 99991330 is about 9999.5664906035. The cubic root of 99991330 is about 464.1454687819.

It can be divided in two parts, 999 and 91330, that added together give a palindrome (92329).

The spelling of 99991330 in words is "ninety-nine million, nine hundred ninety-one thousand, three hundred thirty".