99630144 has 42 divisors (see below), whose sum is σ = 285573470. Its totient is φ = 33209856.

The previous prime is 99630143. The next prime is 99630197. The reversal of 99630144 is 44103699.

99630144 is a `hidden beast` number, since 9 + 9 + 630 + 14 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 56070144 + 43560000 = 7488^2 + 6600^2 .

It is a super-3 number, since 3×99630144³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 99630099 and 99630108.

It is not an unprimeable number, because it can be changed into a prime (99630143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85909 + ... + 87060.

Almost surely, 2^99630144 is an apocalyptic number.

It is an amenable number.

99630144 is an abundant number, since it is smaller than the sum of its proper divisors (185943326).

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

99630144 is a wasteful number, since it uses less digits than its factorization.

99630144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172987 (or 172974 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 99630144 is about 9981.4900691229. The cubic root of 99630144 is about 463.5859365938.

The spelling of 99630144 in words is "ninety-nine million, six hundred thirty thousand, one hundred forty-four".