8523947 has 4 divisors (see below), whose sum is σ = 8533896. Its totient is φ = 8514000.

The previous prime is 8523917. The next prime is 8523959. The reversal of 8523947 is 7493258.

8523947 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8523947 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 8523947.

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, 3554 + ... + 5447.

It is an arithmetic number, because the mean of its divisors is an integer number (2133474).

Almost surely, 2^8523947 is an apocalyptic number.

8523947 is a deficient number, since it is larger than the sum of its proper divisors (9949).

8523947 is an equidigital number, since it uses as much as digits as its factorization.

8523947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9948.

The product of its digits is 60480, while the sum is 38.

The square root of 8523947 is about 2919.5799355387. The cubic root of 8523947 is about 204.2742291106.

It can be divided in two parts, 8523 and 947, that multiplied together give a square (8071281 = 2841²).

The spelling of 8523947 in words is "eight million, five hundred twenty-three thousand, nine hundred forty-seven".