9998854 has 4 divisors (see below), whose sum is σ = 14998284. Its totient is φ = 4999426.

The previous prime is 9998851. The next prime is 9998861. The reversal of 9998854 is 4588999.

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

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499712 + ... + 2499715.

It is an arithmetic number, because the mean of its divisors is an integer number (3749571).

Almost surely, 2^9998854 is an apocalyptic number.

9998854 is a deficient number, since it is larger than the sum of its proper divisors (4999430).

9998854 is a wasteful number, since it uses less digits than its factorization.

9998854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4999429.

The product of its digits is 933120, while the sum is 52.

The square root of 9998854 is about 3162.0964564668. The cubic root of 9998854 is about 215.4352387483.

The spelling of 9998854 in words is "nine million, nine hundred ninety-eight thousand, eight hundred fifty-four".