8446945 has 8 divisors (see below), whose sum is σ = 10916136. Its totient is φ = 6237696.

The previous prime is 8446939. The next prime is 8446951. The reversal of 8446945 is 5496448.

It is an interprime number because it is at equal distance from previous prime (8446939) and next prime (8446951).

It can be written as a sum of positive squares in 4 ways, for example, as 204304 + 8242641 = 452^2 + 2871^2 .

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 8446945 - 2⁵ = 8446913 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8446898 and 8446907.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64912 + ... + 65041.

It is an arithmetic number, because the mean of its divisors is an integer number (1364517).

Almost surely, 2^8446945 is an apocalyptic number.

It is an amenable number.

8446945 is a deficient number, since it is larger than the sum of its proper divisors (2469191).

8446945 is a wasteful number, since it uses less digits than its factorization.

8446945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129971.

The product of its digits is 138240, while the sum is 40.

The square root of 8446945 is about 2906.3628472715. The cubic root of 8446945 is about 203.6572563972.

The spelling of 8446945 in words is "eight million, four hundred forty-six thousand, nine hundred forty-five".