8644842 has 24 divisors (see below), whose sum is σ = 19377540. Its totient is φ = 2782080.

The previous prime is 8644799. The next prime is 8644843. The reversal of 8644842 is 2484468.

8644842 is a `hidden beast` number, since 8 + 644 + 8 + 4 + 2 = 666.

8644842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8003241 + 641601 = 2829^2 + 801^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8644797 and 8644806.

It is not an unprimeable number, because it can be changed into a prime (8644843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7759 + ... + 8802.

Almost surely, 2^8644842 is an apocalyptic number.

8644842 is an abundant number, since it is smaller than the sum of its proper divisors (10732698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8644842 is a wasteful number, since it uses less digits than its factorization.

8644842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16598 (or 16595 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

The square root of 8644842 is about 2940.2112169026. The cubic root of 8644842 is about 205.2354384036.

The spelling of 8644842 in words is "eight million, six hundred forty-four thousand, eight hundred forty-two".