8398599445 has 4 divisors (see below), whose sum is σ = 10078319340. Its totient is φ = 6718879552.

The previous prime is 8398599421. The next prime is 8398599467. The reversal of 8398599445 is 5449958938.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4142080881 + 4256518564 = 64359^2 + 65242^2 .

It is a cyclic number.

It is not a de Polignac number, because 8398599445 - 2⁹ = 8398598933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839859940 + ... + 839859949.

It is an arithmetic number, because the mean of its divisors is an integer number (2519579835).

Almost surely, 2^8398599445 is an apocalyptic number.

It is an amenable number.

8398599445 is a deficient number, since it is larger than the sum of its proper divisors (1679719895).

8398599445 is a wasteful number, since it uses less digits than its factorization.

8398599445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679719894.

The product of its digits is 55987200, while the sum is 64.

The square root of 8398599445 is about 91643.8729266720. The cubic root of 8398599445 is about 2032.6797296517.

The spelling of 8398599445 in words is "eight billion, three hundred ninety-eight million, five hundred ninety-nine thousand, four hundred forty-five".