105326989 has 2 divisors, whose sum is σ = 105326990. Its totient is φ = 105326988.

The previous prime is 105326981. The next prime is 105326993. The reversal of 105326989 is 989623501.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56746089 + 48580900 = 7533^2 + 6970^2 .

It is a cyclic number.

It is not a de Polignac number, because 105326989 - 2³ = 105326981 is a prime.

It is a super-2 number, since 2×105326989² = 22187549223612242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105326981) 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, 52663494 + 52663495.

It is an arithmetic number, because the mean of its divisors is an integer number (52663495).

Almost surely, 2^105326989 is an apocalyptic number.

It is an amenable number.

105326989 is a deficient number, since it is larger than the sum of its proper divisors (1).

105326989 is an equidigital number, since it uses as much as digits as its factorization.

105326989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 105326989 is about 10262.8937926883. The cubic root of 105326989 is about 472.2586156363.

The spelling of 105326989 in words is "one hundred five million, three hundred twenty-six thousand, nine hundred eighty-nine".