84263999 has 4 divisors (see below), whose sum is σ = 84322080. Its totient is φ = 84205920.

The previous prime is 84263969. The next prime is 84264001. The reversal of 84263999 is 99936248.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84263999 - 2¹⁶ = 84198463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84263909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26807 + ... + 29784.

It is an arithmetic number, because the mean of its divisors is an integer number (21080520).

Almost surely, 2^84263999 is an apocalyptic number.

84263999 is a deficient number, since it is larger than the sum of its proper divisors (58081).

84263999 is a wasteful number, since it uses less digits than its factorization.

84263999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58080.

The product of its digits is 839808, while the sum is 50.

The square root of 84263999 is about 9179.5424177897. The cubic root of 84263999 is about 438.4102392043.

The spelling of 84263999 in words is "eighty-four million, two hundred sixty-three thousand, nine hundred ninety-nine".