9424856421 has 48 divisors (see below), whose sum is σ = 14306160960. Its totient is φ = 5971069440.

The previous prime is 9424856377. The next prime is 9424856431. The reversal of 9424856421 is 1246584249.

It is a happy number.

9424856421 is a `hidden beast` number, since 9 + 42 + 48 + 564 + 2 + 1 = 666.

9424856421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9424856421 - 2¹⁰ = 9424855397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9424856431) 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 47 ways as a sum of consecutive naturals, for example, 7299786 + ... + 7301076.

It is an arithmetic number, because the mean of its divisors is an integer number (298045020).

Almost surely, 2^9424856421 is an apocalyptic number.

It is an amenable number.

9424856421 is a deficient number, since it is larger than the sum of its proper divisors (4881304539).

9424856421 is a wasteful number, since it uses less digits than its factorization.

9424856421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 1743 counting only the distinct ones).

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

The square root of 9424856421 is about 97081.6997224503. The cubic root of 9424856421 is about 2112.3128820689.

The spelling of 9424856421 in words is "nine billion, four hundred twenty-four million, eight hundred fifty-six thousand, four hundred twenty-one".