9997309 has 8 divisors (see below), whose sum is σ = 12097728. Its totient is φ = 8064960.

The previous prime is 9997303. The next prime is 9997319. The reversal of 9997309 is 9037999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9997309 - 2¹⁷ = 9866237 is a prime.

It is a Duffinian number.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41887 + ... + 42124.

It is an arithmetic number, because the mean of its divisors is an integer number (1512216).

Almost surely, 2^9997309 is an apocalyptic number.

It is an amenable number.

9997309 is a deficient number, since it is larger than the sum of its proper divisors (2100419).

9997309 is a wasteful number, since it uses less digits than its factorization.

9997309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84035.

The product of its (nonzero) digits is 137781, while the sum is 46.

The square root of 9997309 is about 3161.8521470809. The cubic root of 9997309 is about 215.4241419903.

The spelling of 9997309 in words is "nine million, nine hundred ninety-seven thousand, three hundred nine".