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12623189 is a prime number
BaseRepresentation
bin110000001001…
…110101010101
3212202022202112
4300021311111
511212420224
61130320405
7212203205
oct60116525
925668675
1012623189
117141a97
124289105
1327cc857
141968405
15119530e
hexc09d55

12623189 has 2 divisors, whose sum is σ = 12623190. Its totient is φ = 12623188.

The previous prime is 12623089. The next prime is 12623287. The reversal of 12623189 is 98132621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8898289 + 3724900 = 2983^2 + 1930^2 .

It is a cyclic number.

It is not a de Polignac number, because 12623189 - 28 = 12622933 is a prime.

It is a lonely number, since its distance to closest prime (12623287) sets a new record.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12623089) 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, 6311594 + 6311595.

It is an arithmetic number, because the mean of its divisors is an integer number (6311595).

Almost surely, 212623189 is an apocalyptic number.

It is an amenable number.

12623189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12623189 is an equidigital number, since it uses as much as digits as its factorization.

12623189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 12623189 is about 3552.9127487176. The cubic root of 12623189 is about 232.8393410700.

The spelling of 12623189 in words is "twelve million, six hundred twenty-three thousand, one hundred eighty-nine".