9998546 has 4 divisors (see below), whose sum is σ = 14997822. Its totient is φ = 4999272.

The previous prime is 9998543. The next prime is 9998557. The reversal of 9998546 is 6458999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6458999 = 541 ⋅11939.

It can be written as a sum of positive squares in only one way, i.e., 9954025 + 44521 = 3155^2 + 211^2 .

It is a super-2 number, since 2×9998546² = 199941844228232, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9998494 and 9998503.

It is not an unprimeable number, because it can be changed into a prime (9998543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499635 + ... + 2499638.

Almost surely, 2^9998546 is an apocalyptic number.

9998546 is a deficient number, since it is larger than the sum of its proper divisors (4999276).

9998546 is a wasteful number, since it uses less digits than its factorization.

9998546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4999275.

The product of its digits is 699840, while the sum is 50.

The square root of 9998546 is about 3162.0477542251. The cubic root of 9998546 is about 215.4330266703.

The spelling of 9998546 in words is "nine million, nine hundred ninety-eight thousand, five hundred forty-six".