105656939 has 2 divisors, whose sum is σ = 105656940. Its totient is φ = 105656938.

The previous prime is 105656933. The next prime is 105657103. The reversal of 105656939 is 939656501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105656939 - 2²⁰ = 104608363 is a prime.

It is a super-2 number, since 2×105656939² = 22326777517699442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105656939.

It is not a weakly prime, because it can be changed into another prime (105656933) 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, 52828469 + 52828470.

It is an arithmetic number, because the mean of its divisors is an integer number (52828470).

Almost surely, 2^105656939 is an apocalyptic number.

105656939 is a deficient number, since it is larger than the sum of its proper divisors (1).

105656939 is an equidigital number, since it uses as much as digits as its factorization.

105656939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 218700, while the sum is 44.

The square root of 105656939 is about 10278.9561240429. The cubic root of 105656939 is about 472.7512380367.

The spelling of 105656939 in words is "one hundred five million, six hundred fifty-six thousand, nine hundred thirty-nine".