9997443 has 12 divisors (see below), whose sum is σ = 14713920. Its totient is φ = 6538896.

The previous prime is 9997441. The next prime is 9997451. The reversal of 9997443 is 3447999.

It is not a de Polignac number, because 9997443 - 2¹ = 9997441 is a prime.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9997441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10003 + ... + 10956.

It is an arithmetic number, because the mean of its divisors is an integer number (1226160).

Almost surely, 2^9997443 is an apocalyptic number.

9997443 is a deficient number, since it is larger than the sum of its proper divisors (4716477).

9997443 is a wasteful number, since it uses less digits than its factorization.

9997443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21018 (or 21015 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 9997443 is about 3161.8733371215. The cubic root of 9997443 is about 215.4251044728.

It can be divided in two parts, 9997 and 443, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 9997443 in words is "nine million, nine hundred ninety-seven thousand, four hundred forty-three".