3963128905 has 8 divisors (see below), whose sum is σ = 4756842432. Its totient is φ = 3169777968.

The previous prime is 3963128891. The next prime is 3963128933. The reversal of 3963128905 is 5098213693.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3963128905 - 2¹³ = 3963120713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65989 + ... + 110818.

It is an arithmetic number, because the mean of its divisors is an integer number (594605304).

Almost surely, 2^3963128905 is an apocalyptic number.

It is an amenable number.

3963128905 is a deficient number, since it is larger than the sum of its proper divisors (793713527).

3963128905 is a wasteful number, since it uses less digits than its factorization.

3963128905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181295.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 3963128905 is about 62953.3867635412. The cubic root of 3963128905 is about 1582.5085538031.

The spelling of 3963128905 in words is "three billion, nine hundred sixty-three million, one hundred twenty-eight thousand, nine hundred five".