8523913 has 4 divisors (see below), whose sum is σ = 8972560. Its totient is φ = 8075268.

The previous prime is 8523899. The next prime is 8523917. The reversal of 8523913 is 3193258.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3193258 = 2 ⋅1596629.

It is a cyclic number.

It is not a de Polignac number, because 8523913 - 2⁵ = 8523881 is a prime.

8523913 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8523917) 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, 224295 + ... + 224332.

It is an arithmetic number, because the mean of its divisors is an integer number (2243140).

Almost surely, 2^8523913 is an apocalyptic number.

It is an amenable number.

8523913 is a deficient number, since it is larger than the sum of its proper divisors (448647).

8523913 is a wasteful number, since it uses less digits than its factorization.

8523913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448646.

The product of its digits is 6480, while the sum is 31.

The square root of 8523913 is about 2919.5741127774. The cubic root of 8523913 is about 204.2739575097.

The spelling of 8523913 in words is "eight million, five hundred twenty-three thousand, nine hundred thirteen".