3940220540 has 48 divisors (see below), whose sum is σ = 8508265920. Its totient is φ = 1531845120.

The previous prime is 3940220527. The next prime is 3940220569. The reversal of 3940220540 is 450220493.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211649 + ... + 229511.

It is an arithmetic number, because the mean of its divisors is an integer number (177255540).

Almost surely, 2^3940220540 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 3940220540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4254132960).

3940220540 is an abundant number, since it is smaller than the sum of its proper divisors (4568045380).

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

3940220540 is a wasteful number, since it uses less digits than its factorization.

3940220540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18182 (or 18180 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 3940220540 is about 62771.1760284926. The cubic root of 3940220540 is about 1579.4534962993.

The spelling of 3940220540 in words is "three billion, nine hundred forty million, two hundred twenty thousand, five hundred forty".