9997307 has 4 divisors (see below), whose sum is σ = 10041576.
Its totient is φ = 9953040.
The previous prime is 9997303. The next prime is 9997319. The reversal of 9997307 is 7037999.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7037999 = 19 ⋅370421.
It is a cyclic number.
It is not a de Polignac number, because 9997307 - 22 = 9997303 is a prime.
It is a super-2 number, since 2×99973072 = 199892294504498, which contains 22 as substring.
It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 21794 + ... + 22247.
It is an arithmetic number, because the mean of its divisors is an integer number (2510394).
Almost surely, 29997307 is an apocalyptic number.
9997307 is a deficient number, since it is larger than the sum of its proper divisors (44269).
9997307 is a wasteful number, since it uses less digits than its factorization.
9997307 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 44268.
The product of its (nonzero) digits is 107163, while the sum is 44.
The square root of 9997307 is about 3161.8518308105.
The cubic root of 9997307 is about 215.4241276248.
The spelling of 9997307 in words is "nine million, nine hundred ninety-seven thousand, three hundred seven".