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3872969 is a prime number
BaseRepresentation
bin1110110001100011001001
321021202201022
432301203021
51442413334
6215002225
744630312
oct16614311
97252638
103872969
112205901
121369375
13a57ac9
1472b609
1551782e
hex3b18c9

3872969 has 2 divisors, whose sum is σ = 3872970. Its totient is φ = 3872968.

The previous prime is 3872963. The next prime is 3872971. The reversal of 3872969 is 9692783.

3872969 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., 3853369 + 19600 = 1963^2 + 140^2 .

It is an emirp because it is prime and its reverse (9692783) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-3872969 is a prime.

It is a super-2 number, since 2×38729692 = 29999777749922, which contains 22 as substring.

Together with 3872971, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (3872963) 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, 1936484 + 1936485.

It is an arithmetic number, because the mean of its divisors is an integer number (1936485).

Almost surely, 23872969 is an apocalyptic number.

It is an amenable number.

3872969 is a deficient number, since it is larger than the sum of its proper divisors (1).

3872969 is an equidigital number, since it uses as much as digits as its factorization.

3872969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 3872969 is about 1967.9860263732. The cubic root of 3872969 is about 157.0415863439.

The spelling of 3872969 in words is "three million, eight hundred seventy-two thousand, nine hundred sixty-nine".