8603923521 has 4 divisors (see below), whose sum is σ = 11471898032. Its totient is φ = 5735949012.

The previous prime is 8603923519. The next prime is 8603923529. The reversal of 8603923521 is 1253293068.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8603923521 - 2¹ = 8603923519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8603923521.

It is not an unprimeable number, because it can be changed into a prime (8603923529) 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, 1433987251 + ... + 1433987256.

It is an arithmetic number, because the mean of its divisors is an integer number (2867974508).

Almost surely, 2^8603923521 is an apocalyptic number.

It is an amenable number.

8603923521 is a deficient number, since it is larger than the sum of its proper divisors (2867974511).

8603923521 is a wasteful number, since it uses less digits than its factorization.

8603923521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867974510.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 8603923521 is about 92757.3367502539. The cubic root of 8603923521 is about 2049.1111372380. Note that the first 4 decimals are identical.

The spelling of 8603923521 in words is "eight billion, six hundred three million, nine hundred twenty-three thousand, five hundred twenty-one".