8208903609 has 15 divisors (see below), whose sum is σ = 12263901397. Its totient is φ = 5472058788.

The previous prime is 8208903607. The next prime is 8208903629. The reversal of 8208903609 is 9063098028.

The square root of 8208903609 is 90603.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 8208903609 - 2¹ = 8208903607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8208903607) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 810394 + ... + 820460.

Almost surely, 2^8208903609 is an apocalyptic number.

8208903609 is the 90603-rd square number.

8208903609 is the 45302-nd centered octagonal number.

It is an amenable number.

8208903609 is a deficient number, since it is larger than the sum of its proper divisors (4054997788).

8208903609 is an frugal number, since it uses more digits than its factorization.

8208903609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20146 (or 10070 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The cubic root of 8208903609 is about 2017.2592645414.

The spelling of 8208903609 in words is "eight billion, two hundred eight million, nine hundred three thousand, six hundred nine".