99953220 has 48 divisors (see below), whose sum is σ = 281026368. Its totient is φ = 26544000.

The previous prime is 99953179. The next prime is 99953221. The reversal of 99953220 is 2235999.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99953221) 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 15 ways as a sum of consecutive naturals, for example, 11742 + ... + 18378.

It is an arithmetic number, because the mean of its divisors is an integer number (5854716).

Almost surely, 2^99953220 is an apocalyptic number.

It is an amenable number.

99953220 is an abundant number, since it is smaller than the sum of its proper divisors (181073148).

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

99953220 is a wasteful number, since it uses less digits than its factorization.

99953220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6900 (or 6898 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 99953220 is about 9997.6607263899. The cubic root of 99953220 is about 464.0864942303.

The spelling of 99953220 in words is "ninety-nine million, nine hundred fifty-three thousand, two hundred twenty".