9999297 has 48 divisors (see below), whose sum is σ = 18450432. Its totient is φ = 5067360.

The previous prime is 9999289. The next prime is 9999299. The reversal of 9999297 is 7929999.

It is not a de Polignac number, because 9999297 - 2³ = 9999289 is a prime.

Its product of digits (826686) is a multiple of the sum of its prime factors (378).

9999297 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9999299) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32418 + ... + 32724.

It is an arithmetic number, because the mean of its divisors is an integer number (384384).

Almost surely, 2^9999297 is an apocalyptic number.

It is an amenable number.

9999297 is a deficient number, since it is larger than the sum of its proper divisors (8451135).

9999297 is a wasteful number, since it uses less digits than its factorization.

9999297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 375 counting only the distinct ones).

The product of its digits is 826686, while the sum is 54.

The square root of 9999297 is about 3162.1665041550. The cubic root of 9999297 is about 215.4384203263.

It can be divided in two parts, 9999 and 297, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 9999297 in words is "nine million, nine hundred ninety-nine thousand, two hundred ninety-seven".