3989449221120 has 1320 divisors, whose sum is σ = 15881912367552. Its totient is φ = 956811018240.

The previous prime is 3989449221073. The next prime is 3989449221169. The reversal of 3989449221120 is 211229449893.

It is a happy number.

3989449221120 is a `hidden beast` number, since 3 + 9 + 8 + 9 + 4 + 492 + 21 + 120 = 666.

It is a tau number, because it is divible by the number of its divisors (1320).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 5369379469 + ... + 5369380211.

Almost surely, 2^{3989449221120} is an apocalyptic number.

3989449221120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3989449221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7940956183776).

3989449221120 is an abundant number, since it is smaller than the sum of its proper divisors (11892463146432).

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

3989449221120 is a wasteful number, since it uses less digits than its factorization.

3989449221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 871 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 3989449221120 in words is "three trillion, nine hundred eighty-nine billion, four hundred forty-nine million, two hundred twenty-one thousand, one hundred twenty".