3938515940 has 24 divisors (see below), whose sum is σ = 8394332352. Its totient is φ = 1551892320.

The previous prime is 3938515927. The next prime is 3938515963. The reversal of 3938515940 is 495158393.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1468256 + ... + 1470935.

It is an arithmetic number, because the mean of its divisors is an integer number (349763848).

Almost surely, 2^3938515940 is an apocalyptic number.

It is an amenable number.

3938515940 is an abundant number, since it is smaller than the sum of its proper divisors (4455816412).

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

3938515940 is a wasteful number, since it uses less digits than its factorization.

3938515940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939267 (or 2939265 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 47.

The square root of 3938515940 is about 62757.5966716381. The cubic root of 3938515940 is about 1579.2256981558.

The spelling of 3938515940 in words is "three billion, nine hundred thirty-eight million, five hundred fifteen thousand, nine hundred forty".