9997438 has 32 divisors (see below), whose sum is σ = 17169408. Its totient is φ = 4324800.

The previous prime is 9997397. The next prime is 9997441. The reversal of 9997438 is 8347999.

9997438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Its product of digits (489888) is a multiple of the sum of its prime divisors (288).

It is a junction number, because it is equal to n+sod(n) for n = 9997391 and 9997400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72906 + ... + 73042.

It is an arithmetic number, because the mean of its divisors is an integer number (536544).

Almost surely, 2^9997438 is an apocalyptic number.

9997438 is a deficient number, since it is larger than the sum of its proper divisors (7171970).

9997438 is a wasteful number, since it uses less digits than its factorization.

9997438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288.

The product of its digits is 489888, while the sum is 49.

The square root of 9997438 is about 3161.8725464509. The cubic root of 9997438 is about 215.4250685594.

The spelling of 9997438 in words is "nine million, nine hundred ninety-seven thousand, four hundred thirty-eight".