3948908396689 has 16 divisors (see below), whose sum is σ = 4189968020736. Its totient is φ = 3708829670400.

The previous prime is 3948908396687. The next prime is 3948908396701. The reversal of 3948908396689 is 9866938098493.

It is a happy number.

It is not a de Polignac number, because 3948908396689 - 2¹ = 3948908396687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3948908396687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20041129 + ... + 20237209.

It is an arithmetic number, because the mean of its divisors is an integer number (261873001296).

Almost surely, 2^{3948908396689} is an apocalyptic number.

It is an amenable number.

3948908396689 is a deficient number, since it is larger than the sum of its proper divisors (241059624047).

3948908396689 is a wasteful number, since it uses less digits than its factorization.

3948908396689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198576.

The product of its (nonzero) digits is 4353564672, while the sum is 82.

The spelling of 3948908396689 in words is "three trillion, nine hundred forty-eight billion, nine hundred eight million, three hundred ninety-six thousand, six hundred eighty-nine".