99889144 has 16 divisors (see below), whose sum is σ = 198309600. Its totient is φ = 47006592.

The previous prime is 99889121. The next prime is 99889151. The reversal of 99889144 is 44198899.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 99889091 and 99889100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367104 + ... + 367375.

It is an arithmetic number, because the mean of its divisors is an integer number (12394350).

Almost surely, 2^99889144 is an apocalyptic number.

It is an amenable number.

99889144 is a deficient number, since it is larger than the sum of its proper divisors (98420456).

99889144 is a wasteful number, since it uses less digits than its factorization.

99889144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734502 (or 734498 counting only the distinct ones).

The product of its digits is 746496, while the sum is 52.

The square root of 99889144 is about 9994.4556630164. The cubic root of 99889144 is about 463.9873039530.

The spelling of 99889144 in words is "ninety-nine million, eight hundred eighty-nine thousand, one hundred forty-four".