84221129 has 8 divisors (see below), whose sum is σ = 88740000. Its totient is φ = 79710912.

The previous prime is 84221107. The next prime is 84221171. The reversal of 84221129 is 92112248.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84221129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84221329) 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, 30977 + ... + 33585.

It is an arithmetic number, because the mean of its divisors is an integer number (11092500).

Almost surely, 2^84221129 is an apocalyptic number.

It is an amenable number.

84221129 is a deficient number, since it is larger than the sum of its proper divisors (4518871).

84221129 is a wasteful number, since it uses less digits than its factorization.

84221129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4327.

The product of its digits is 2304, while the sum is 29.

The square root of 84221129 is about 9177.2070370021. The cubic root of 84221129 is about 438.3358783251.

The spelling of 84221129 in words is "eighty-four million, two hundred twenty-one thousand, one hundred twenty-nine".