83112009 has 8 divisors (see below), whose sum is σ = 111625440. Its totient is φ = 55003296.

The previous prime is 83111989. The next prime is 83112013. The reversal of 83112009 is 90021138.

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

It is a de Polignac number, because none of the positive numbers 2^k-83112009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83112009.

It is not an unprimeable number, because it can be changed into a prime (83112019) 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 7 ways as a sum of consecutive naturals, for example, 100699 + ... + 101520.

It is an arithmetic number, because the mean of its divisors is an integer number (13953180).

Almost surely, 2^83112009 is an apocalyptic number.

It is an amenable number.

83112009 is a deficient number, since it is larger than the sum of its proper divisors (28513431).

83112009 is a wasteful number, since it uses less digits than its factorization.

83112009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202359.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 83112009 is about 9116.5787990891. The cubic root of 83112009 is about 436.4032002993.

The spelling of 83112009 in words is "eighty-three million, one hundred twelve thousand, nine".