3939626540 has 24 divisors (see below), whose sum is σ = 8372896560. Its totient is φ = 1556863808.

The previous prime is 3939626533. The next prime is 3939626569. The reversal of 3939626540 is 456269393.

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, 1184975 + ... + 1188294.

It is an arithmetic number, because the mean of its divisors is an integer number (348870690).

Almost surely, 2^3939626540 is an apocalyptic number.

It is an amenable number.

3939626540 is an abundant number, since it is smaller than the sum of its proper divisors (4433270020).

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

3939626540 is a wasteful number, since it uses less digits than its factorization.

3939626540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373361 (or 2373359 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 47.

The square root of 3939626540 is about 62766.4443791426. Note that the first 3 decimals coincide. The cubic root of 3939626540 is about 1579.3741232019.

The spelling of 3939626540 in words is "three billion, nine hundred thirty-nine million, six hundred twenty-six thousand, five hundred forty".