3999941220000 has 480 divisors, whose sum is σ = 15155396270784. Its totient is φ = 912640000000.

The previous prime is 3999941219999. The next prime is 3999941220007. The reversal of 3999941220000 is 221499993.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (3999941220007) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 11041750 + ... + 11398250.

Almost surely, 2^{3999941220000} is an apocalyptic number.

3999941220000 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 3999941220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7577698135392).

3999941220000 is an abundant number, since it is smaller than the sum of its proper divisors (11155455050784).

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

3999941220000 is a wasteful number, since it uses less digits than its factorization.

3999941220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356562 (or 356539 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 48.

The spelling of 3999941220000 in words is "three trillion, nine hundred ninety-nine billion, nine hundred forty-one million, two hundred twenty thousand".