99880002 has 24 divisors (see below), whose sum is σ = 223870140. Its totient is φ = 32145120.

The previous prime is 99879991. The next prime is 99880003. The reversal of 99880002 is 20008899.

It can be written as a sum of positive squares in 2 ways, for example, as 91183401 + 8696601 = 9549^2 + 2949^2 .

It is not an unprimeable number, because it can be changed into a prime (99880003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95149 + ... + 96192.

Almost surely, 2^99880002 is an apocalyptic number.

99880002 is an abundant number, since it is smaller than the sum of its proper divisors (123990138).

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

99880002 is a wasteful number, since it uses less digits than its factorization.

99880002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191378 (or 191375 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 99880002 is about 9993.9982989792. The cubic root of 99880002 is about 463.9731485898.

The spelling of 99880002 in words is "ninety-nine million, eight hundred eighty thousand, two".