99984889 has 4 divisors (see below), whose sum is σ = 103210240. Its totient is φ = 96759540.

The previous prime is 99984883. The next prime is 99984893. The reversal of 99984889 is 98848999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98848999 = 17 ⋅5814647.

It is a cyclic number.

It is not a de Polignac number, because 99984889 - 2¹³ = 99976697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99984889.

It is not an unprimeable number, because it can be changed into a prime (99984883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1612629 + ... + 1612690.

It is an arithmetic number, because the mean of its divisors is an integer number (25802560).

Almost surely, 2^99984889 is an apocalyptic number.

It is an amenable number.

99984889 is a deficient number, since it is larger than the sum of its proper divisors (3225351).

99984889 is a wasteful number, since it uses less digits than its factorization.

99984889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3225350.

The product of its digits is 13436928, while the sum is 64.

The square root of 99984889 is about 9999.2444214551. The cubic root of 99984889 is about 464.1355025006.

The spelling of 99984889 in words is "ninety-nine million, nine hundred eighty-four thousand, eight hundred eighty-nine".