9940620144 has 160 divisors (see below), whose sum is σ = 31902958080. Its totient is φ = 2597078016.

The previous prime is 9940620143. The next prime is 9940620161. The reversal of 9940620144 is 4410260499.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9940620143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 456742 + ... + 478010.

It is an arithmetic number, because the mean of its divisors is an integer number (199393488).

Almost surely, 2^9940620144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9940620144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15951479040).

9940620144 is an abundant number, since it is smaller than the sum of its proper divisors (21962337936).

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

9940620144 is a wasteful number, since it uses less digits than its factorization.

9940620144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21407 (or 21401 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 9940620144 is about 99702.6586606395. The cubic root of 9940620144 is about 2150.1618875037.

The spelling of 9940620144 in words is "nine billion, nine hundred forty million, six hundred twenty thousand, one hundred forty-four".