84288129 has 4 divisors (see below), whose sum is σ = 112384176. Its totient is φ = 56192084.

The previous prime is 84288107. The next prime is 84288133. The reversal of 84288129 is 92188248.

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 84288129 - 2⁵ = 84288097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84288229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14048019 + ... + 14048024.

It is an arithmetic number, because the mean of its divisors is an integer number (28096044).

Almost surely, 2^84288129 is an apocalyptic number.

It is an amenable number.

84288129 is a deficient number, since it is larger than the sum of its proper divisors (28096047).

84288129 is a wasteful number, since it uses less digits than its factorization.

84288129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28096046.

The product of its digits is 73728, while the sum is 42.

The square root of 84288129 is about 9180.8566593755. The cubic root of 84288129 is about 438.4520832088.

The spelling of 84288129 in words is "eighty-four million, two hundred eighty-eight thousand, one hundred twenty-nine".