3947749460 has 12 divisors (see below), whose sum is σ = 8290273908. Its totient is φ = 1579099776.

The previous prime is 3947749459. The next prime is 3947749471. The reversal of 3947749460 is 649477493.

3947749460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1383542416 + 2564207044 = 37196^2 + 50638^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98693717 + ... + 98693756.

It is an arithmetic number, because the mean of its divisors is an integer number (690856159).

Almost surely, 2^3947749460 is an apocalyptic number.

It is an amenable number.

3947749460 is an abundant number, since it is smaller than the sum of its proper divisors (4342524448).

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

3947749460 is a wasteful number, since it uses less digits than its factorization.

3947749460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197387482 (or 197387480 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 53.

The square root of 3947749460 is about 62831.1185639727. The cubic root of 3947749460 is about 1580.4588556726.

The spelling of 3947749460 in words is "three billion, nine hundred forty-seven million, seven hundred forty-nine thousand, four hundred sixty".