8787047 has 4 divisors (see below), whose sum is σ = 8936040. Its totient is φ = 8638056.

The previous prime is 8787041. The next prime is 8787049. The reversal of 8787047 is 7407878.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7407878 = 2 ⋅3703939.

It is a cyclic number.

It is not a de Polignac number, because 8787047 - 2¹⁶ = 8721511 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 8786995 and 8787013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8787041) 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, 74408 + ... + 74525.

It is an arithmetic number, because the mean of its divisors is an integer number (2234010).

Almost surely, 2^8787047 is an apocalyptic number.

8787047 is a deficient number, since it is larger than the sum of its proper divisors (148993).

8787047 is a wasteful number, since it uses less digits than its factorization.

8787047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148992.

The product of its (nonzero) digits is 87808, while the sum is 41.

The square root of 8787047 is about 2964.2953631512. The cubic root of 8787047 is about 206.3546769536.

The spelling of 8787047 in words is "eight million, seven hundred eighty-seven thousand, forty-seven".