84828209 has 8 divisors (see below), whose sum is σ = 89346240. Its totient is φ = 80379376.

The previous prime is 84828197. The next prime is 84828239. The reversal of 84828209 is 90282848.

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

It is a cyclic number.

It is not a de Polignac number, because 84828209 - 2⁴ = 84828193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84828239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14774 + ... + 19695.

It is an arithmetic number, because the mean of its divisors is an integer number (11168280).

Almost surely, 2^84828209 is an apocalyptic number.

It is an amenable number.

84828209 is a deficient number, since it is larger than the sum of its proper divisors (4518031).

84828209 is a wasteful number, since it uses less digits than its factorization.

84828209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34599.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 84828209 is about 9210.2230700456. The cubic root of 84828209 is about 439.3865573332.

The spelling of 84828209 in words is "eighty-four million, eight hundred twenty-eight thousand, two hundred nine".