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9997393 = 71428199
BaseRepresentation
bin100110001000…
…110001010001
3200210220211211
4212020301101
510024404033
6554140121
7150655630
oct46106121
920726754
109997393
11570920a
123421641
1320c0623
141483517
15d272cd
hex988c51

9997393 has 4 divisors (see below), whose sum is σ = 11425600. Its totient is φ = 8569188.

The previous prime is 9997381. The next prime is 9997397. The reversal of 9997393 is 3937999.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-9997393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9997397) 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, 714093 + ... + 714106.

It is an arithmetic number, because the mean of its divisors is an integer number (2856400).

Almost surely, 29997393 is an apocalyptic number.

It is an amenable number.

9997393 is a deficient number, since it is larger than the sum of its proper divisors (1428207).

9997393 is a wasteful number, since it uses less digits than its factorization.

9997393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428206.

The product of its digits is 413343, while the sum is 49.

The square root of 9997393 is about 3161.8654304066. The cubic root of 9997393 is about 215.4247453386.

The spelling of 9997393 in words is "nine million, nine hundred ninety-seven thousand, three hundred ninety-three".

Divisors: 1 7 1428199 9997393