99643148 has 12 divisors (see below), whose sum is σ = 190227912. Its totient is φ = 45292320.

The previous prime is 99643139. The next prime is 99643151. The reversal of 99643148 is 84134699.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 2264617 = 99643148 / (9 + 9 + 6 + 4 + 3 + 1 + 4 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 99643099 and 99643108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1132265 + ... + 1132352.

It is an arithmetic number, because the mean of its divisors is an integer number (15852326).

Almost surely, 2^99643148 is an apocalyptic number.

It is an amenable number.

99643148 is a deficient number, since it is larger than the sum of its proper divisors (90584764).

99643148 is a wasteful number, since it uses less digits than its factorization.

99643148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264632 (or 2264630 counting only the distinct ones).

The product of its digits is 186624, while the sum is 44.

The square root of 99643148 is about 9982.1414536161. The cubic root of 99643148 is about 463.6061052195.

It can be divided in two parts, 996 and 43148, that added together give a palindrome (44144).

The spelling of 99643148 in words is "ninety-nine million, six hundred forty-three thousand, one hundred forty-eight".