8978847 has 4 divisors (see below), whose sum is σ = 11971800. Its totient is φ = 5985896.

The previous prime is 8978831. The next prime is 8978863. The reversal of 8978847 is 7488798.

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

It is an interprime number because it is at equal distance from previous prime (8978831) and next prime (8978863).

It is a cyclic number.

It is not a de Polignac number, because 8978847 - 2⁴ = 8978831 is a prime.

8978847 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8978847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8978807) 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, 1496472 + ... + 1496477.

It is an arithmetic number, because the mean of its divisors is an integer number (2992950).

Almost surely, 2^8978847 is an apocalyptic number.

8978847 is a deficient number, since it is larger than the sum of its proper divisors (2992953).

8978847 is a wasteful number, since it uses less digits than its factorization.

8978847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2992952.

The product of its digits is 903168, while the sum is 51.

The square root of 8978847 is about 2996.4724260370. The cubic root of 8978847 is about 207.8452914542.

The spelling of 8978847 in words is "eight million, nine hundred seventy-eight thousand, eight hundred forty-seven".