8543945 has 8 divisors (see below), whose sum is σ = 10855944. Its totient is φ = 6433024.

The previous prime is 8543921. The next prime is 8543957. The reversal of 8543945 is 5493458.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 203401 + 8340544 = 451^2 + 2888^2 .

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 8543945 - 2⁶ = 8543881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8543899 and 8543908.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 50174 + ... + 50343.

It is an arithmetic number, because the mean of its divisors is an integer number (1356993).

Almost surely, 2^8543945 is an apocalyptic number.

8543945 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8543945 is a deficient number, since it is larger than the sum of its proper divisors (2311999).

8543945 is a wasteful number, since it uses less digits than its factorization.

8543945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100539.

The product of its digits is 86400, while the sum is 38.

The square root of 8543945 is about 2923.0027369128. The cubic root of 8543945 is about 204.4338533445.

The spelling of 8543945 in words is "eight million, five hundred forty-three thousand, nine hundred forty-five".