999966432 has 24 divisors (see below), whose sum is σ = 2624912136. Its totient is φ = 333322112.

The previous prime is 999966427. The next prime is 999966439. The reversal of 999966432 is 234669999.

999966432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999966439) 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, 5208063 + ... + 5208254.

It is an arithmetic number, because the mean of its divisors is an integer number (109371339).

Almost surely, 2^999966432 is an apocalyptic number.

It is an amenable number.

999966432 is an abundant number, since it is smaller than the sum of its proper divisors (1624945704).

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

999966432 is a wasteful number, since it uses less digits than its factorization.

999966432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10416330 (or 10416322 counting only the distinct ones).

The product of its digits is 5668704, while the sum is 57.

The square root of 999966432 is about 31622.2458405471. The cubic root of 999966432 is about 999.9888105415.

The spelling of 999966432 in words is "nine hundred ninety-nine million, nine hundred sixty-six thousand, four hundred thirty-two".