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7989097 = 23773361
BaseRepresentation
bin11110011110011101101001
3120000212222111
4132132131221
54021122342
6443122321
7124622554
oct36363551
916025874
107989097
114567366
1228133a1
13186949c
1410bd69b
15a7c217
hex79e769

7989097 has 4 divisors (see below), whose sum is σ = 7994836. Its totient is φ = 7983360.

The previous prime is 7989083. The next prime is 7989143. The reversal of 7989097 is 7909897.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4618201 + 3370896 = 2149^2 + 1836^2 .

It is a cyclic number.

It is not a de Polignac number, because 7989097 - 215 = 7956329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7989097.

It is not an unprimeable number, because it can be changed into a prime (7989067) 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, 697 + ... + 4057.

It is an arithmetic number, because the mean of its divisors is an integer number (1998709).

Almost surely, 27989097 is an apocalyptic number.

It is an amenable number.

7989097 is a deficient number, since it is larger than the sum of its proper divisors (5739).

7989097 is a wasteful number, since it uses less digits than its factorization.

7989097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5738.

The product of its (nonzero) digits is 285768, while the sum is 49.

The square root of 7989097 is about 2826.4990712894. The cubic root of 7989097 is about 199.9091003592.

The spelling of 7989097 in words is "seven million, nine hundred eighty-nine thousand, ninety-seven".

Divisors: 1 2377 3361 7989097