99419388 has 12 divisors (see below), whose sum is σ = 231978600. Its totient is φ = 33139792.

The previous prime is 99419347. The next prime is 99419401. The reversal of 99419388 is 88391499.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 99419388.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4142463 + ... + 4142486.

It is an arithmetic number, because the mean of its divisors is an integer number (19331550).

Almost surely, 2^99419388 is an apocalyptic number.

It is an amenable number.

99419388 is an abundant number, since it is smaller than the sum of its proper divisors (132559212).

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

99419388 is a wasteful number, since it uses less digits than its factorization.

99419388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8284956 (or 8284954 counting only the distinct ones).

The product of its digits is 559872, while the sum is 51.

The square root of 99419388 is about 9970.9271384360. The cubic root of 99419388 is about 463.2588184202.

The spelling of 99419388 in words is "ninety-nine million, four hundred nineteen thousand, three hundred eighty-eight".