9998973 has 6 divisors (see below), whose sum is σ = 14442974. Its totient is φ = 6665976.

The previous prime is 9998971. The next prime is 9998977. The reversal of 9998973 is 3798999.

It is a happy number.

9998973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9998244 + 729 = 3162^2 + 27^2 .

It is not a de Polignac number, because 9998973 - 2¹ = 9998971 is a prime.

It is a super-2 number, since 2×9998973² = 199958922109458, which contains 22 as substring.

It is a Duffinian number.

9998973 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998971) 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, 555490 + ... + 555507.

Almost surely, 2^9998973 is an apocalyptic number.

It is an amenable number.

9998973 is a deficient number, since it is larger than the sum of its proper divisors (4444001).

9998973 is a wasteful number, since it uses less digits than its factorization.

9998973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111003 (or 1111000 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 9998973 is about 3162.1152730411. The cubic root of 9998973 is about 215.4360934026.

The spelling of 9998973 in words is "nine million, nine hundred ninety-eight thousand, nine hundred seventy-three".