3947607650 has 24 divisors (see below), whose sum is σ = 8391486720. Its totient is φ = 1353465360.

The previous prime is 3947607613. The next prime is 3947607659. The reversal of 3947607650 is 567067493.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3947607595 and 3947607604.

It is not an unprimeable number, because it can be changed into a prime (3947607659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5639090 + ... + 5639789.

It is an arithmetic number, because the mean of its divisors is an integer number (349645280).

Almost surely, 2^3947607650 is an apocalyptic number.

3947607650 is an abundant number, since it is smaller than the sum of its proper divisors (4443879070).

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

3947607650 is a wasteful number, since it uses less digits than its factorization.

3947607650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11278898 (or 11278893 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 47.

The square root of 3947607650 is about 62829.9900525219. The cubic root of 3947607650 is about 1580.4399311726.

The spelling of 3947607650 in words is "three billion, nine hundred forty-seven million, six hundred seven thousand, six hundred fifty".