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12939541 is a prime number
BaseRepresentation
bin110001010111…
…000100010101
3220100101201021
4301113010111
511303031131
61141201141
7214661416
oct61270425
926311637
1012939541
11733873a
1244001b1
1328b0844
141a0b80d
151208e11
hexc57115

12939541 has 2 divisors, whose sum is σ = 12939542. Its totient is φ = 12939540.

The previous prime is 12939491. The next prime is 12939571. The reversal of 12939541 is 14593921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9891025 + 3048516 = 3145^2 + 1746^2 .

It is a cyclic number.

It is not a de Polignac number, because 12939541 - 29 = 12939029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12939497 and 12939506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12939571) 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, 6469770 + 6469771.

It is an arithmetic number, because the mean of its divisors is an integer number (6469771).

Almost surely, 212939541 is an apocalyptic number.

It is an amenable number.

12939541 is a deficient number, since it is larger than the sum of its proper divisors (1).

12939541 is an equidigital number, since it uses as much as digits as its factorization.

12939541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 34.

The square root of 12939541 is about 3597.1573499084. The cubic root of 12939541 is about 234.7683910930.

The spelling of 12939541 in words is "twelve million, nine hundred thirty-nine thousand, five hundred forty-one".