84279161 has 4 divisors (see below), whose sum is σ = 84707172. Its totient is φ = 83851152.

The previous prime is 84279137. The next prime is 84279163. The reversal of 84279161 is 16197248.

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 36240400 + 48038761 = 6020^2 + 6931^2 .

It is a cyclic number.

It is not a de Polignac number, because 84279161 - 2²⁶ = 17170297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84279163) 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, 213710 + ... + 214103.

It is an arithmetic number, because the mean of its divisors is an integer number (21176793).

Almost surely, 2^84279161 is an apocalyptic number.

It is an amenable number.

84279161 is a deficient number, since it is larger than the sum of its proper divisors (428011).

84279161 is a wasteful number, since it uses less digits than its factorization.

84279161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428010.

The product of its digits is 24192, while the sum is 38.

The square root of 84279161 is about 9180.3682388018. The cubic root of 84279161 is about 438.4365326688.

The spelling of 84279161 in words is "eighty-four million, two hundred seventy-nine thousand, one hundred sixty-one".