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12750389 is a prime number
BaseRepresentation
bin110000101000…
…111000110101
3212222210020122
4300220320311
511231003024
61133141325
7213243101
oct60507065
925883218
1012750389
117219613
12432a845
132845712
14199c901
1511bcd5e
hexc28e35

12750389 has 2 divisors, whose sum is σ = 12750390. Its totient is φ = 12750388.

The previous prime is 12750383. The next prime is 12750421. The reversal of 12750389 is 98305721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9102289 + 3648100 = 3017^2 + 1910^2 .

It is a cyclic number.

It is not a de Polignac number, because 12750389 - 24 = 12750373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12750383) 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, 6375194 + 6375195.

It is an arithmetic number, because the mean of its divisors is an integer number (6375195).

Almost surely, 212750389 is an apocalyptic number.

It is an amenable number.

12750389 is a deficient number, since it is larger than the sum of its proper divisors (1).

12750389 is an equidigital number, since it uses as much as digits as its factorization.

12750389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 12750389 is about 3570.7686847512. The cubic root of 12750389 is about 233.6188122575.

The spelling of 12750389 in words is "twelve million, seven hundred fifty thousand, three hundred eighty-nine".