8499845 has 4 divisors (see below), whose sum is σ = 10199820. Its totient is φ = 6799872.

The previous prime is 8499839. The next prime is 8499851. The reversal of 8499845 is 5489948.

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

It is an interprime number because it is at equal distance from previous prime (8499839) and next prime (8499851).

It can be written as a sum of positive squares in 2 ways, for example, as 2114116 + 6385729 = 1454^2 + 2527^2 .

It is a cyclic number.

It is not a de Polignac number, because 8499845 - 2¹⁸ = 8237701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8499845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849980 + ... + 849989.

It is an arithmetic number, because the mean of its divisors is an integer number (2549955).

Almost surely, 2^8499845 is an apocalyptic number.

It is an amenable number.

8499845 is a deficient number, since it is larger than the sum of its proper divisors (1699975).

8499845 is a wasteful number, since it uses less digits than its factorization.

8499845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699974.

The product of its digits is 414720, while the sum is 47.

The square root of 8499845 is about 2915.4493650208. The cubic root of 8499845 is about 204.0815145853.

The spelling of 8499845 in words is "eight million, four hundred ninety-nine thousand, eight hundred forty-five".