912412009 has 4 divisors (see below), whose sum is σ = 912540816. Its totient is φ = 912283204.

The previous prime is 912412003. The next prime is 912412021. The reversal of 912412009 is 900214219.

It is a happy number.

912412009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 912412009 - 2⁹ = 912411497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (912412003) 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, 53119 + ... + 68164.

It is an arithmetic number, because the mean of its divisors is an integer number (228135204).

Almost surely, 2^912412009 is an apocalyptic number.

It is an amenable number.

912412009 is a deficient number, since it is larger than the sum of its proper divisors (128807).

912412009 is a wasteful number, since it uses less digits than its factorization.

912412009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128806.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 912412009 is about 30206.1584614793. The cubic root of 912412009 is about 969.9075297120.

The spelling of 912412009 in words is "nine hundred twelve million, four hundred twelve thousand, nine".