105089945 has 8 divisors (see below), whose sum is σ = 126164544. Its totient is φ = 84034224.

The previous prime is 105089923. The next prime is 105089947. The reversal of 105089945 is 549980501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 105089945 - 2⁸ = 105089689 is a prime.

It is a super-2 number, since 2×105089945² = 22087793080206050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105089947) 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 in 7 ways as a sum of consecutive naturals, for example, 15122 + ... + 20948.

It is an arithmetic number, because the mean of its divisors is an integer number (15770568).

Almost surely, 2^105089945 is an apocalyptic number.

It is an amenable number.

105089945 is a deficient number, since it is larger than the sum of its proper divisors (21074599).

105089945 is an equidigital number, since it uses as much as digits as its factorization.

105089945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9439.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 105089945 is about 10251.3386930683. The cubic root of 105089945 is about 471.9040684694.

The spelling of 105089945 in words is "one hundred five million, eighty-nine thousand, nine hundred forty-five".