999990412 has 48 divisors (see below), whose sum is σ = 1916006400. Its totient is φ = 455174720.

The previous prime is 999990373. The next prime is 999990419. The reversal of 999990412 is 214099999.

999990412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 999990412.

It is not an unprimeable number, because it can be changed into a prime (999990419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186789 + ... + 192067.

It is an arithmetic number, because the mean of its divisors is an integer number (39916800).

Almost surely, 2^999990412 is an apocalyptic number.

999990412 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

999990412 is a deficient number, since it is larger than the sum of its proper divisors (916015988).

999990412 is a wasteful number, since it uses less digits than its factorization.

999990412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406 (or 5404 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 52.

The square root of 999990412 is about 31622.6250017294. The cubic root of 999990412 is about 999.9968039898.

The spelling of 999990412 in words is "nine hundred ninety-nine million, nine hundred ninety thousand, four hundred twelve".