84811238408 has 32 divisors (see below), whose sum is σ = 173018982360. Its totient is φ = 38740101120.

The previous prime is 84811238401. The next prime is 84811238423. The reversal of 84811238408 is 80483211848.

It can be written as a sum of positive squares in 4 ways, for example, as 73418237764 + 11393000644 = 270958^2 + 106738^2 .

It is a super-2 number, since 2×84811238408² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (84811238401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4193483 + ... + 4213658.

Almost surely, 2^84811238408 is an apocalyptic number.

It is an amenable number.

84811238408 is an abundant number, since it is smaller than the sum of its proper divisors (88207743952).

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

84811238408 is a wasteful number, since it uses less digits than its factorization.

84811238408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8407257 (or 8407253 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 47.

The spelling of 84811238408 in words is "eighty-four billion, eight hundred eleven million, two hundred thirty-eight thousand, four hundred eight".