9998847 has 6 divisors (see below), whose sum is σ = 14442792. Its totient is φ = 6665892.

The previous prime is 9998809. The next prime is 9998851. The reversal of 9998847 is 7488999.

It is not a de Polignac number, because 9998847 - 2⁷ = 9998719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9998793 and 9998802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998867) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555483 + ... + 555500.

It is an arithmetic number, because the mean of its divisors is an integer number (2407132).

Almost surely, 2^9998847 is an apocalyptic number.

9998847 is a deficient number, since it is larger than the sum of its proper divisors (4443945).

9998847 is a wasteful number, since it uses less digits than its factorization.

9998847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110989 (or 1110986 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 9998847 is about 3162.0953496060. The cubic root of 9998847 is about 215.4351884743.

The spelling of 9998847 in words is "nine million, nine hundred ninety-eight thousand, eight hundred forty-seven".