3990853201920 has 416 divisors, whose sum is σ = 13860046405632. Its totient is φ = 974603943936.

The previous prime is 3990853201919. The next prime is 3990853201927. The reversal of 3990853201920 is 291023580993.

It is a tau number, because it is divible by the number of its divisors (416).

It is not an unprimeable number, because it can be changed into a prime (3990853201927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101417769 + ... + 101457111.

Almost surely, 2^{3990853201920} is an apocalyptic number.

3990853201920 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 3990853201920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6930023202816).

3990853201920 is an abundant number, since it is smaller than the sum of its proper divisors (9869193203712).

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

3990853201920 is a wasteful number, since it uses less digits than its factorization.

3990853201920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39515 (or 39493 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The spelling of 3990853201920 in words is "three trillion, nine hundred ninety billion, eight hundred fifty-three million, two hundred one thousand, nine hundred twenty".