8238222945 has 24 divisors (see below), whose sum is σ = 14324657256. Its totient is φ = 4379851008.

The previous prime is 8238222931. The next prime is 8238222953. The reversal of 8238222945 is 5492228328.

8238222945 is a `hidden beast` number, since 8 + 2 + 382 + 229 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 96589584 + 8141633361 = 9828^2 + 90231^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8238222945 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8238222945.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 274492 + ... + 303021.

It is an arithmetic number, because the mean of its divisors is an integer number (596860719).

Almost surely, 2^8238222945 is an apocalyptic number.

It is an amenable number.

8238222945 is a deficient number, since it is larger than the sum of its proper divisors (6086434311).

8238222945 is a wasteful number, since it uses less digits than its factorization.

8238222945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577841 (or 577838 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 8238222945 is about 90764.6569155638. The cubic root of 8238222945 is about 2019.6580593801.

The spelling of 8238222945 in words is "eight billion, two hundred thirty-eight million, two hundred twenty-two thousand, nine hundred forty-five".