8399145 has 16 divisors (see below), whose sum is σ = 13547520. Its totient is φ = 4443264.

The previous prime is 8399141. The next prime is 8399189. The reversal of 8399145 is 5419938.

It is not a de Polignac number, because 8399145 - 2² = 8399141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8399141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300 + ... + 4109.

It is an arithmetic number, because the mean of its divisors is an integer number (846720).

Almost surely, 2^8399145 is an apocalyptic number.

It is an amenable number.

8399145 is a deficient number, since it is larger than the sum of its proper divisors (5148375).

8399145 is a wasteful number, since it uses less digits than its factorization.

8399145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544.

The product of its digits is 38880, while the sum is 39.

The square root of 8399145 is about 2898.1278439710. The cubic root of 8399145 is about 203.2723741537.

The spelling of 8399145 in words is "eight million, three hundred ninety-nine thousand, one hundred forty-five".