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9947489 is a prime number
BaseRepresentation
bin100101111100…
…100101100001
3200201101101112
4211330211201
510021304424
6553113105
7150360266
oct45744541
920641345
109947489
115684772
1233b8795
1320a39b6
14146d26d
15d1760e
hex97c961

9947489 has 2 divisors, whose sum is σ = 9947490. Its totient is φ = 9947488.

The previous prime is 9947473. The next prime is 9947501. The reversal of 9947489 is 9847499.

9947489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8880400 + 1067089 = 2980^2 + 1033^2 .

It is an emirp because it is prime and its reverse (9847499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9947489 - 24 = 9947473 is a prime.

It is not a weakly prime, because it can be changed into another prime (9947429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4973744 + 4973745.

It is an arithmetic number, because the mean of its divisors is an integer number (4973745).

Almost surely, 29947489 is an apocalyptic number.

It is an amenable number.

9947489 is a deficient number, since it is larger than the sum of its proper divisors (1).

9947489 is an equidigital number, since it uses as much as digits as its factorization.

9947489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 50.

The square root of 9947489 is about 3153.9640137452. The cubic root of 9947489 is about 215.0657019320.

The spelling of 9947489 in words is "nine million, nine hundred forty-seven thousand, four hundred eighty-nine".