99919984 has 20 divisors (see below), whose sum is σ = 193822416. Its totient is φ = 49901312.

The previous prime is 99919969. The next prime is 99919997. The reversal of 99919984 is 48991999.

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 3 ways as a sum of consecutive naturals, for example, 12552 + ... + 18904.

Almost surely, 2^99919984 is an apocalyptic number.

It is an amenable number.

99919984 is a deficient number, since it is larger than the sum of its proper divisors (93902432).

99919984 is a wasteful number, since it uses less digits than its factorization.

99919984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7344 (or 7338 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 58.

The square root of 99919984 is about 9995.9983993596. The cubic root of 99919984 is about 464.0350498692.

The spelling of 99919984 in words is "ninety-nine million, nine hundred nineteen thousand, nine hundred eighty-four".