99144321 has 8 divisors (see below), whose sum is σ = 132258144. Its totient is φ = 66063360.

The previous prime is 99144319. The next prime is 99144343. The reversal of 99144321 is 12344199.

99144321 is a nontrivial binomial coefficient, being equal to C(14082, 2).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99144321 - 2¹ = 99144319 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (99144361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1 + ... + 14081.

It is an arithmetic number, because the mean of its divisors is an integer number (16532268).

Almost surely, 2^99144321 is an apocalyptic number.

99144321 is the 14081-st triangular number and also the 7041-st hexagonal number.

It is an amenable number.

99144321 is a deficient number, since it is larger than the sum of its proper divisors (33113823).

99144321 is a wasteful number, since it uses less digits than its factorization.

99144321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16431.

The product of its digits is 7776, while the sum is 33.

The square root of 99144321 is about 9957.1241330015. The cubic root of 99144321 is about 462.8311858225.

The spelling of 99144321 in words is "ninety-nine million, one hundred forty-four thousand, three hundred twenty-one".