99911100 has 72 divisors (see below), whose sum is σ = 296921968. Its totient is φ = 25920000.

The previous prime is 99911093. The next prime is 99911183. The reversal of 99911100 is 111999.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6600 + ... + 15600.

Almost surely, 2^99911100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99911100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148460984).

99911100 is an abundant number, since it is smaller than the sum of its proper divisors (197010868).

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

99911100 is a wasteful number, since it uses less digits than its factorization.

99911100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9055 (or 9048 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 30.

The square root of 99911100 is about 9995.5540116594. The cubic root of 99911100 is about 464.0212968326.

It can be divided in two parts, 999 and 11100, that multiplied together give a square (11088900 = 3330²).

The spelling of 99911100 in words is "ninety-nine million, nine hundred eleven thousand, one hundred".