8871966401 has 4 divisors (see below), whose sum is σ = 8950479492. Its totient is φ = 8793453312.

The previous prime is 8871966391. The next prime is 8871966413. The reversal of 8871966401 is 1046691788.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3265551025 + 5606415376 = 57145^2 + 74876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8871966401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8871966401.

It is not an unprimeable number, because it can be changed into a prime (8871936401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39256376 + ... + 39256601.

It is an arithmetic number, because the mean of its divisors is an integer number (2237619873).

Almost surely, 2^8871966401 is an apocalyptic number.

It is an amenable number.

8871966401 is a deficient number, since it is larger than the sum of its proper divisors (78513091).

8871966401 is a wasteful number, since it uses less digits than its factorization.

8871966401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78513090.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 8871966401 is about 94191.1163592406. The cubic root of 8871966401 is about 2070.1729496016.

The spelling of 8871966401 in words is "eight billion, eight hundred seventy-one million, nine hundred sixty-six thousand, four hundred one".