8499999 has 4 divisors (see below), whose sum is σ = 11333336. Its totient is φ = 5666664.

The previous prime is 8499979. The next prime is 8500007. The reversal of 8499999 is 9999948.

8499999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-8499999 is a prime.

It is a Duffinian number.

8499999 is a modest number, since divided by 9999 gives 849 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8499979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1416664 + ... + 1416669.

It is an arithmetic number, because the mean of its divisors is an integer number (2833334).

Almost surely, 2^8499999 is an apocalyptic number.

8499999 is a deficient number, since it is larger than the sum of its proper divisors (2833337).

8499999 is a wasteful number, since it uses less digits than its factorization.

8499999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833336.

The product of its digits is 1889568, while the sum is 57.

The square root of 8499999 is about 2915.4757759241. The cubic root of 8499999 is about 204.0827470926.

The spelling of 8499999 in words is "eight million, four hundred ninety-nine thousand, nine hundred ninety-nine".