105289643 has 2 divisors, whose sum is σ = 105289644. Its totient is φ = 105289642.

The previous prime is 105289631. The next prime is 105289649. The reversal of 105289643 is 346982501.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105289643 - 2⁴ = 105289627 is a prime.

It is a super-2 number, since 2×105289643² = 22171817846134898, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 105289597 and 105289606.

It is not a weakly prime, because it can be changed into another prime (105289649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52644821 + 52644822.

It is an arithmetic number, because the mean of its divisors is an integer number (52644822).

Almost surely, 2^105289643 is an apocalyptic number.

105289643 is a deficient number, since it is larger than the sum of its proper divisors (1).

105289643 is an equidigital number, since it uses as much as digits as its factorization.

105289643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 105289643 is about 10261.0741640435. The cubic root of 105289643 is about 472.2027924791.

The spelling of 105289643 in words is "one hundred five million, two hundred eighty-nine thousand, six hundred forty-three".