3948899616 has 72 divisors (see below), whose sum is σ = 11340951804. Its totient is φ = 1303257600.

The previous prime is 3948899573. The next prime is 3948899623. The reversal of 3948899616 is 6169988493.

It is a happy number.

3948899616 is a `hidden beast` number, since 3 + 9 + 4 + 8 + 8 + 9 + 9 + 616 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3946352400 + 2547216 = 62820^2 + 1596^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38791 + ... + 96966.

Almost surely, 2^3948899616 is an apocalyptic number.

3948899616 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3948899616 is an abundant number, since it is smaller than the sum of its proper divisors (7392052188).

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

3948899616 is a wasteful number, since it uses less digits than its factorization.

3948899616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135874 (or 135863 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The square root of 3948899616 is about 62840.2706550505. The cubic root of 3948899616 is about 1580.6123268887.

The spelling of 3948899616 in words is "three billion, nine hundred forty-eight million, eight hundred ninety-nine thousand, six hundred sixteen".