9997308 has 18 divisors (see below), whose sum is σ = 25271064. Its totient is φ = 3332424.

The previous prime is 9997303. The next prime is 9997319. The reversal of 9997308 is 8037999.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138816 + ... + 138887.

It is an arithmetic number, because the mean of its divisors is an integer number (1403948).

Almost surely, 2^9997308 is an apocalyptic number.

It is an amenable number.

9997308 is an abundant number, since it is smaller than the sum of its proper divisors (15273756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9997308 is a wasteful number, since it uses less digits than its factorization.

9997308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277713 (or 277708 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 9997308 is about 3161.8519889457. The cubic root of 9997308 is about 215.4241348075.

The spelling of 9997308 in words is "nine million, nine hundred ninety-seven thousand, three hundred eight".