9144388420 has 12 divisors (see below), whose sum is σ = 19203215724. Its totient is φ = 3657755360.

The previous prime is 9144388397. The next prime is 9144388459. The reversal of 9144388420 is 248834419.

It can be written as a sum of positive squares in 2 ways, for example, as 2869530624 + 6274857796 = 53568^2 + 79214^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228609691 + ... + 228609730.

It is an arithmetic number, because the mean of its divisors is an integer number (1600267977).

Almost surely, 2^9144388420 is an apocalyptic number.

It is an amenable number.

9144388420 is an abundant number, since it is smaller than the sum of its proper divisors (10058827304).

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

9144388420 is a wasteful number, since it uses less digits than its factorization.

9144388420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457219430 (or 457219428 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 9144388420 is about 95626.2956513531. The cubic root of 9144388420 is about 2091.1485655154.

The spelling of 9144388420 in words is "nine billion, one hundred forty-four million, three hundred eighty-eight thousand, four hundred twenty".