9997444 has 12 divisors (see below), whose sum is σ = 17527104. Its totient is φ = 4989704.

The previous prime is 9997441. The next prime is 9997451. The reversal of 9997444 is 4447999.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9997394 and 9997403.

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 3 ways as a sum of consecutive naturals, for example, 657 + ... + 4519.

It is an arithmetic number, because the mean of its divisors is an integer number (1460592).

Almost surely, 2^9997444 is an apocalyptic number.

It is an amenable number.

9997444 is a deficient number, since it is larger than the sum of its proper divisors (7529660).

9997444 is a wasteful number, since it uses less digits than its factorization.

9997444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4514 (or 4512 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 9997444 is about 3161.8734952556. The cubic root of 9997444 is about 215.4251116555.

The spelling of 9997444 in words is "nine million, nine hundred ninety-seven thousand, four hundred forty-four".