99880038 has 24 divisors (see below), whose sum is σ = 220077000. Its totient is φ = 32728704.

The previous prime is 99880021. The next prime is 99880051. The reversal of 99880038 is 83008899.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 99879975 and 99880002.

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 11 ways as a sum of consecutive naturals, for example, 45963 + ... + 48086.

It is an arithmetic number, because the mean of its divisors is an integer number (9169875).

Almost surely, 2^99880038 is an apocalyptic number.

99880038 is an abundant number, since it is smaller than the sum of its proper divisors (120196962).

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

99880038 is a wasteful number, since it uses less digits than its factorization.

99880038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94116 (or 94113 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 99880038 is about 9994.0001000600. Note that the first 3 decimals coincide. The cubic root of 99880038 is about 463.9732043335.

The spelling of 99880038 in words is "ninety-nine million, eight hundred eighty thousand, thirty-eight".