8859945 has 32 divisors (see below), whose sum is σ = 15070464. Its totient is φ = 4435200.

The previous prime is 8859943. The next prime is 8859953. The reversal of 8859945 is 5499588.

It is a happy number.

8859945 is a nontrivial binomial coefficient, being equal to C(4210, 2).

It is not a de Polignac number, because 8859945 - 2¹ = 8859943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8859894 and 8859903.

It is not an unprimeable number, because it can be changed into a prime (8859943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20835 + ... + 21255.

It is an arithmetic number, because the mean of its divisors is an integer number (470952).

Almost surely, 2^8859945 is an apocalyptic number.

8859945 is the 4209-th triangular number and also the 2105-th hexagonal number.

It is an amenable number.

8859945 is a deficient number, since it is larger than the sum of its proper divisors (6210519).

8859945 is a wasteful number, since it uses less digits than its factorization.

8859945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513.

The product of its digits is 518400, while the sum is 48.

The square root of 8859945 is about 2976.5659744074. The cubic root of 8859945 is about 206.9237507681.

The spelling of 8859945 in words is "eight million, eight hundred fifty-nine thousand, nine hundred forty-five".