Search a number
3208889 is a prime number
BaseRepresentation
bin1100001111011010111001
320001000202202
430033122321
51310141024
6152435545
736163235
oct14173271
96030682
103208889
1118a1982
1210a8bb5
13884768
145d75c5
15435bae
hex30f6b9

3208889 has 2 divisors, whose sum is σ = 3208890. Its totient is φ = 3208888.

The previous prime is 3208883. The next prime is 3208913. The reversal of 3208889 is 9888023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2839225 + 369664 = 1685^2 + 608^2 .

It is an emirp because it is prime and its reverse (9888023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3208889 - 24 = 3208873 is a prime.

It is a super-2 number, since 2×32088892 = 20593937228642, which contains 22 as substring.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3208883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1604444 + 1604445.

It is an arithmetic number, because the mean of its divisors is an integer number (1604445).

Almost surely, 23208889 is an apocalyptic number.

It is an amenable number.

3208889 is a deficient number, since it is larger than the sum of its proper divisors (1).

3208889 is an equidigital number, since it uses as much as digits as its factorization.

3208889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 3208889 is about 1791.3372100194. The cubic root of 3208889 is about 147.4975811152.

The spelling of 3208889 in words is "three million, two hundred eight thousand, eight hundred eighty-nine".