9441390840 has 128 divisors (see below), whose sum is σ = 32400000000. Its totient is φ = 2156064768.

The previous prime is 9441390787. The next prime is 9441390857. The reversal of 9441390840 is 480931449.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 9441390792 and 9441390801.

It is a congruent number.

It is an unprimeable number.

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, 1044661 + ... + 1053659.

It is an arithmetic number, because the mean of its divisors is an integer number (253125000).

Almost surely, 2^9441390840 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 9441390840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16200000000).

9441390840 is an abundant number, since it is smaller than the sum of its proper divisors (22958609160).

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

9441390840 is a wasteful number, since it uses less digits than its factorization.

9441390840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10269 (or 10265 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 9441390840 is about 97166.8196453913. The cubic root of 9441390840 is about 2113.5473999794.

The spelling of 9441390840 in words is "nine billion, four hundred forty-one million, three hundred ninety thousand, eight hundred forty".