8479999 has 4 divisors (see below), whose sum is σ = 9250920. Its totient is φ = 7709080.

The previous prime is 8479981. The next prime is 8480033. The reversal of 8479999 is 9999748.

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 8479999 - 2⁵ = 8479967 is a prime.

It is a Duffinian number.

8479999 is a modest number, since divided by 9999 gives 847 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8479949) 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, 385444 + ... + 385465.

It is an arithmetic number, because the mean of its divisors is an integer number (2312730).

Almost surely, 2^8479999 is an apocalyptic number.

8479999 is a deficient number, since it is larger than the sum of its proper divisors (770921).

8479999 is a wasteful number, since it uses less digits than its factorization.

8479999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770920.

The product of its digits is 1469664, while the sum is 55.

The square root of 8479999 is about 2912.0437840115. The cubic root of 8479999 is about 203.9225564686.

The spelling of 8479999 in words is "eight million, four hundred seventy-nine thousand, nine hundred ninety-nine".