9775945 has 8 divisors (see below), whose sum is σ = 11772936. Its totient is φ = 7792896.

The previous prime is 9775939. The next prime is 9775949. The reversal of 9775945 is 5495779.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 853776 + 8922169 = 924^2 + 2987^2 .

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 9775945 - 2¹⁹ = 9251657 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9775895 and 9775904.

It is not an unprimeable number, because it can be changed into a prime (9775949) by changing a digit.

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, 1872 + ... + 4801.

It is an arithmetic number, because the mean of its divisors is an integer number (1471617).

Almost surely, 2^9775945 is an apocalyptic number.

It is an amenable number.

9775945 is a deficient number, since it is larger than the sum of its proper divisors (1996991).

9775945 is a wasteful number, since it uses less digits than its factorization.

9775945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6971.

The product of its digits is 396900, while the sum is 46.

The square root of 9775945 is about 3126.6507639965. The cubic root of 9775945 is about 213.8222604884.

The spelling of 9775945 in words is "nine million, seven hundred seventy-five thousand, nine hundred forty-five".