99864920 has 32 divisors (see below), whose sum is σ = 229925520. Its totient is φ = 39016320.

The previous prime is 99864881. The next prime is 99864929. The reversal of 99864920 is 2946899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99864929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27311 + ... + 30750.

Almost surely, 2^99864920 is an apocalyptic number.

It is an amenable number.

99864920 is an abundant number, since it is smaller than the sum of its proper divisors (130060600).

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

99864920 is a wasteful number, since it uses less digits than its factorization.

99864920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58115 (or 58111 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 99864920 is about 9993.2437176324. The cubic root of 99864920 is about 463.9497939138.

The spelling of 99864920 in words is "ninety-nine million, eight hundred sixty-four thousand, nine hundred twenty".