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3820709 is a prime number
BaseRepresentation
bin1110100100110010100101
321012010000202
432210302211
51434230314
6213520245
744322044
oct16446245
97163022
103820709
11217a612
121343085
13a3a099
1471655b
155070de
hex3a4ca5

3820709 has 2 divisors, whose sum is σ = 3820710. Its totient is φ = 3820708.

The previous prime is 3820673. The next prime is 3820711. The reversal of 3820709 is 9070283.

3820709 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., 2879809 + 940900 = 1697^2 + 970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-3820709 is a prime.

Together with 3820711, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3820759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1910354 + 1910355.

It is an arithmetic number, because the mean of its divisors is an integer number (1910355).

Almost surely, 23820709 is an apocalyptic number.

It is an amenable number.

3820709 is a deficient number, since it is larger than the sum of its proper divisors (1).

3820709 is an equidigital number, since it uses as much as digits as its factorization.

3820709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 3820709 is about 1954.6633981328. The cubic root of 3820709 is about 156.3320371332.

The spelling of 3820709 in words is "three million, eight hundred twenty thousand, seven hundred nine".