84213827 has 8 divisors (see below), whose sum is σ = 86323200. Its totient is φ = 82127304.

The previous prime is 84213821. The next prime is 84213839. The reversal of 84213827 is 72831248.

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-84213827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84213821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1874 + ... + 13112.

It is an arithmetic number, because the mean of its divisors is an integer number (10790400).

Almost surely, 2^84213827 is an apocalyptic number.

84213827 is the 7493-rd pentagonal number.

84213827 is a deficient number, since it is larger than the sum of its proper divisors (2109373).

84213827 is a wasteful number, since it uses less digits than its factorization.

84213827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11425.

The product of its digits is 21504, while the sum is 35.

The square root of 84213827 is about 9176.8091949217. The cubic root of 84213827 is about 438.3232100033.

The spelling of 84213827 in words is "eighty-four million, two hundred thirteen thousand, eight hundred twenty-seven".