84354161 has 4 divisors (see below), whose sum is σ = 85100772. Its totient is φ = 83607552.

The previous prime is 84354157. The next prime is 84354169. The reversal of 84354161 is 16145348.

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 47679025 + 36675136 = 6905^2 + 6056^2 .

It is a cyclic number.

It is not a de Polignac number, because 84354161 - 2² = 84354157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84354169) 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 3 ways as a sum of consecutive naturals, for example, 373136 + ... + 373361.

It is an arithmetic number, because the mean of its divisors is an integer number (21275193).

Almost surely, 2^84354161 is an apocalyptic number.

It is an amenable number.

84354161 is a deficient number, since it is larger than the sum of its proper divisors (746611).

84354161 is a wasteful number, since it uses less digits than its factorization.

84354161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746610.

The product of its digits is 11520, while the sum is 32.

The square root of 84354161 is about 9184.4521339054. The cubic root of 84354161 is about 438.5665489554.

The spelling of 84354161 in words is "eighty-four million, three hundred fifty-four thousand, one hundred sixty-one".