4389944718390 has 256 divisors, whose sum is σ = 13388017582080. Its totient is φ = 894680916480.

The previous prime is 4389944718331. The next prime is 4389944718409. The reversal of 4389944718390 is 938174499834.

It is a happy number.

It is a super-2 number, since 2×4389944718390² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 608106201 + ... + 608113419.

It is an arithmetic number, because the mean of its divisors is an integer number (52296943680).

Almost surely, 2^{4389944718390} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4389944718390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6694008791040).

4389944718390 is an abundant number, since it is smaller than the sum of its proper divisors (8998072863690).

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

4389944718390 is a wasteful number, since it uses less digits than its factorization.

4389944718390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12267.

The product of its (nonzero) digits is 188116992, while the sum is 69.

The spelling of 4389944718390 in words is "four trillion, three hundred eighty-nine billion, nine hundred forty-four million, seven hundred eighteen thousand, three hundred ninety".