99763920 has 80 divisors (see below), whose sum is σ = 343638720. Its totient is φ = 26603136.

The previous prime is 99763907. The next prime is 99763931. The reversal of 99763920 is 2936799.

99763920 is a `hidden beast` number, since 9 + 9 + 7 + 639 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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, 20934 + ... + 25253.

It is an arithmetic number, because the mean of its divisors is an integer number (4295484).

Almost surely, 2^99763920 is an apocalyptic number.

99763920 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99763920 is an abundant number, since it is smaller than the sum of its proper divisors (243874800).

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

99763920 is a wasteful number, since it uses less digits than its factorization.

99763920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46209 (or 46197 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 45.

The square root of 99763920 is about 9988.1890250435. The cubic root of 99763920 is about 463.7933334495.

The spelling of 99763920 in words is "ninety-nine million, seven hundred sixty-three thousand, nine hundred twenty".