84409863 has 8 divisors (see below), whose sum is σ = 112599168. Its totient is φ = 56246904.

The previous prime is 84409861. The next prime is 84409877. The reversal of 84409863 is 36890448.

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

It is not a de Polignac number, because 84409863 - 2¹ = 84409861 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84409861) 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, 2806 + ... + 13292.

It is an arithmetic number, because the mean of its divisors is an integer number (14074896).

Almost surely, 2^84409863 is an apocalyptic number.

84409863 is a deficient number, since it is larger than the sum of its proper divisors (28189305).

84409863 is a wasteful number, since it uses less digits than its factorization.

84409863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13173.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 84409863 is about 9187.4840408025. The cubic root of 84409863 is about 438.6630613206.

The spelling of 84409863 in words is "eighty-four million, four hundred nine thousand, eight hundred sixty-three".