8423778924 has 96 divisors (see below), whose sum is σ = 24593479680. Its totient is φ = 2470305600.

The previous prime is 8423778907. The next prime is 8423778929. The reversal of 8423778924 is 4298773248.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (8423778929) 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 31 ways as a sum of consecutive naturals, for example, 77539 + ... + 151194.

It is an arithmetic number, because the mean of its divisors is an integer number (256182080).

Almost surely, 2^8423778924 is an apocalyptic number.

It is an amenable number.

8423778924 is an abundant number, since it is smaller than the sum of its proper divisors (16169700756).

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

8423778924 is a wasteful number, since it uses less digits than its factorization.

8423778924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228788 (or 228780 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The square root of 8423778924 is about 91781.1468875825. The cubic root of 8423778924 is about 2034.7090661404.

The spelling of 8423778924 in words is "eight billion, four hundred twenty-three million, seven hundred seventy-eight thousand, nine hundred twenty-four".