9997351 has 16 divisors (see below), whose sum is σ = 12513088.
Its totient is φ = 7776000.
The previous prime is 9997349. The next prime is 9997357. The reversal of 9997351 is 1537999.
It is a 8-Lehmer number, since φ(9997351) divides (9997351-1)8.
It is a cyclic number.
It is not a de Polignac number, because 9997351 - 21 = 9997349 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 9997298 and 9997307.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (9997357) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4651 + ... + 6451.
It is an arithmetic number, because the mean of its divisors is an integer number (782068).
Almost surely, 29997351 is an apocalyptic number.
9997351 is a gapful number since it is divisible by the number (91) formed by its first and last digit.
9997351 is the 1826-th hex number.
9997351 is a deficient number, since it is larger than the sum of its proper divisors (2515737).
9997351 is a wasteful number, since it uses less digits than its factorization.
9997351 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1882.
The product of its digits is 76545, while the sum is 43.
The square root of 9997351 is about 3161.8587887507.
The cubic root of 9997351 is about 215.4244436648.
The spelling of 9997351 in words is "nine million, nine hundred ninety-seven thousand, three hundred fifty-one".