99911084 has 48 divisors (see below), whose sum is σ = 217851648. Its totient is φ = 39037248.

The previous prime is 99911081. The next prime is 99911087. The reversal of 99911084 is 48011999.

99911084 = T₁₈₂ + T₁₈₃ + ... + T₈₄₅.

It is an interprime number because it is at equal distance from previous prime (99911081) and next prime (99911087).

It is not an unprimeable number, because it can be changed into a prime (99911081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28559 + ... + 31865.

It is an arithmetic number, because the mean of its divisors is an integer number (4538576).

Almost surely, 2^99911084 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 99911084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108925824).

99911084 is an abundant number, since it is smaller than the sum of its proper divisors (117940564).

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

99911084 is a wasteful number, since it uses less digits than its factorization.

99911084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3414 (or 3412 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 99911084 is about 9995.5532113035. The cubic root of 99911084 is about 464.0212720628.

The spelling of 99911084 in words is "ninety-nine million, nine hundred eleven thousand, eighty-four".