8418734440 has 32 divisors (see below), whose sum is σ = 19252685160. Its totient is φ = 3312288000.

The previous prime is 8418734419. The next prime is 8418734447. The reversal of 8418734440 is 444378148.

It can be written as a sum of positive squares in 4 ways, for example, as 3908000196 + 4510734244 = 62514^2 + 67162^2 .

It is a super-2 number, since 2×8418734440² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8418734447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1722711 + ... + 1727590.

Almost surely, 2^8418734440 is an apocalyptic number.

It is an amenable number.

8418734440 is an abundant number, since it is smaller than the sum of its proper divisors (10833950720).

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

8418734440 is a wasteful number, since it uses less digits than its factorization.

8418734440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450373 (or 3450369 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 43.

The square root of 8418734440 is about 91753.6617252957. The cubic root of 8418734440 is about 2034.3028309285.

The spelling of 8418734440 in words is "eight billion, four hundred eighteen million, seven hundred thirty-four thousand, four hundred forty".