8440056420 has 48 divisors (see below), whose sum is σ = 23773696128. Its totient is φ = 2237201920.

The previous prime is 8440056413. The next prime is 8440056433. The reversal of 8440056420 is 246500448.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 411141 + ... + 431180.

It is an arithmetic number, because the mean of its divisors is an integer number (495285336).

Almost surely, 2^8440056420 is an apocalyptic number.

It is an amenable number.

8440056420 is an abundant number, since it is smaller than the sum of its proper divisors (15333639708).

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

8440056420 is a wasteful number, since it uses less digits than its factorization.

8440056420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842500 (or 842498 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 8440056420 is about 91869.7796884264. The cubic root of 8440056420 is about 2036.0187973582.

Adding to 8440056420 its reverse (246500448), we get a palindrome (8686556868).

The spelling of 8440056420 in words is "eight billion, four hundred forty million, fifty-six thousand, four hundred twenty".