99249220 has 24 divisors (see below), whose sum is σ = 238198464. Its totient is φ = 34028256.

The previous prime is 99249211. The next prime is 99249221. The reversal of 99249220 is 2294299.

It is a self number, because there is not a number n which added to its sum of digits gives 99249220.

It is not an unprimeable number, because it can be changed into a prime (99249221) 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, 354322 + ... + 354601.

It is an arithmetic number, because the mean of its divisors is an integer number (9924936).

Almost surely, 2^99249220 is an apocalyptic number.

It is an amenable number.

99249220 is an abundant number, since it is smaller than the sum of its proper divisors (138949244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99249220 is a wasteful number, since it uses less digits than its factorization.

99249220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708939 (or 708937 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 99249220 is about 9962.3902754309. The cubic root of 99249220 is about 462.9943601233.

The spelling of 99249220 in words is "ninety-nine million, two hundred forty-nine thousand, two hundred twenty".