99221930 has 8 divisors (see below), whose sum is σ = 178599492. Its totient is φ = 39688768.

The previous prime is 99221921. The next prime is 99221957. The reversal of 99221930 is 3912299.

It can be written as a sum of positive squares in 2 ways, for example, as 98227921 + 994009 = 9911^2 + 997^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4961087 + ... + 4961106.

Almost surely, 2^99221930 is an apocalyptic number.

99221930 is a deficient number, since it is larger than the sum of its proper divisors (79377562).

99221930 is a wasteful number, since it uses less digits than its factorization.

99221930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9922200.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 99221930 is about 9961.0205300461. The cubic root of 99221930 is about 462.9519205813.

It can be divided in two parts, 992 and 21930, that added together give a palindrome (22922).

The spelling of 99221930 in words is "ninety-nine million, two hundred twenty-one thousand, nine hundred thirty".