3900444920540 has 192 divisors, whose sum is σ = 9746242023168. Its totient is φ = 1283503104000.

The previous prime is 3900444920479. The next prime is 3900444920557. The reversal of 3900444920540 is 450294440093.

It is a junction number, because it is equal to n+sod(n) for n = 3900444920491 and 3900444920500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 90997754 + ... + 91040606.

It is an arithmetic number, because the mean of its divisors is an integer number (50761677204).

Almost surely, 2^{3900444920540} 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 3900444920540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4873121011584).

3900444920540 is an abundant number, since it is smaller than the sum of its proper divisors (5845797102628).

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

3900444920540 is a wasteful number, since it uses less digits than its factorization.

3900444920540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43168 (or 43166 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 3900444920540 in words is "three trillion, nine hundred billion, four hundred forty-four million, nine hundred twenty thousand, five hundred forty".