3998791696 has 15 divisors (see below), whose sum is σ = 7748149021. Its totient is φ = 1999269376.

The previous prime is 3998791673. The next prime is 3998791703. The reversal of 3998791696 is 6961978993.

The square root of 3998791696 is 63236.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 144865296 + 3853926400 = 12036^2 + 62080^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 245040 + ... + 260848.

Almost surely, 2^3998791696 is an apocalyptic number.

3998791696 is the 63236-th square number.

It is an amenable number.

3998791696 is a deficient number, since it is larger than the sum of its proper divisors (3749357325).

3998791696 is an frugal number, since it uses more digits than its factorization.

3998791696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31626 (or 15811 counting only the distinct ones).

The product of its digits is 39680928, while the sum is 67.

The cubic root of 3998791696 is about 1587.2411972843.

The spelling of 3998791696 in words is "three billion, nine hundred ninety-eight million, seven hundred ninety-one thousand, six hundred ninety-six".