84509843 has 8 divisors (see below), whose sum is σ = 96201216. Its totient is φ = 73486600.

The previous prime is 84509801. The next prime is 84509851. The reversal of 84509843 is 34890548.

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

It is not a de Polignac number, because 84509843 - 2²² = 80315539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84509843.

It is not an unprimeable number, because it can be changed into a prime (84509863) 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, 166763 + ... + 167268.

It is an arithmetic number, because the mean of its divisors is an integer number (12025152).

Almost surely, 2^84509843 is an apocalyptic number.

84509843 is a deficient number, since it is larger than the sum of its proper divisors (11691373).

84509843 is a wasteful number, since it uses less digits than its factorization.

84509843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334065.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 84509843 is about 9192.9235284538. The cubic root of 84509843 is about 438.8361857514.

The spelling of 84509843 in words is "eighty-four million, five hundred nine thousand, eight hundred forty-three".