8638047 has 12 divisors (see below), whose sum is σ = 13611624. Its totient is φ = 5235120.

The previous prime is 8638043. The next prime is 8638051. The reversal of 8638047 is 7408368.

8638047 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8638043) and next prime (8638051).

It is not a de Polignac number, because 8638047 - 2² = 8638043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8638043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43528 + ... + 43725.

It is an arithmetic number, because the mean of its divisors is an integer number (1134302).

Almost surely, 2^8638047 is an apocalyptic number.

8638047 is a deficient number, since it is larger than the sum of its proper divisors (4973577).

8638047 is a wasteful number, since it uses less digits than its factorization.

8638047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87270 (or 87267 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 8638047 is about 2939.0554605179. The cubic root of 8638047 is about 205.1816514036.

The spelling of 8638047 in words is "eight million, six hundred thirty-eight thousand, forty-seven".