84110009 has 4 divisors (see below), whose sum is σ = 84131316. Its totient is φ = 84088704.

The previous prime is 84110003. The next prime is 84110023. The reversal of 84110009 is 90001148.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52243984 + 31866025 = 7228^2 + 5645^2 .

It is a cyclic number.

It is not a de Polignac number, because 84110009 - 2¹⁶ = 84044473 is a prime.

It is a super-2 number, since 2×84110009² = 14148987227960162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84110003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2804 + ... + 13269.

It is an arithmetic number, because the mean of its divisors is an integer number (21032829).

Almost surely, 2^84110009 is an apocalyptic number.

It is an amenable number.

84110009 is a deficient number, since it is larger than the sum of its proper divisors (21307).

84110009 is a wasteful number, since it uses less digits than its factorization.

84110009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21306.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 84110009 is about 9171.1509092371. The cubic root of 84110009 is about 438.1430157162.

The spelling of 84110009 in words is "eighty-four million, one hundred ten thousand, nine".