84107608909 has 4 divisors (see below), whose sum is σ = 84211318240. Its totient is φ = 84003899580.

The previous prime is 84107608891. The next prime is 84107608939. The reversal of 84107608909 is 90980670148.

It is a happy number.

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 84107608909 - 2⁵ = 84107608877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84107608939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51853449 + ... + 51855070.

It is an arithmetic number, because the mean of its divisors is an integer number (21052829560).

Almost surely, 2^84107608909 is an apocalyptic number.

It is an amenable number.

84107608909 is a deficient number, since it is larger than the sum of its proper divisors (103709331).

84107608909 is a wasteful number, since it uses less digits than its factorization.

84107608909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103709330.

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 84107608909 in words is "eighty-four billion, one hundred seven million, six hundred eight thousand, nine hundred nine".