8639888401 has 3 divisors (see below), whose sum is σ = 8639981353. Its totient is φ = 8639795450.

The previous prime is 8639888381. The next prime is 8639888437. The reversal of 8639888401 is 1048889368.

The square root of 8639888401 is 92951.

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

8639888401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 8639888401 - 2⁷ = 8639888273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8639888701) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 46476 + ... + 139426.

Almost surely, 2^8639888401 is an apocalyptic number.

8639888401 is the 92951-st square number.

8639888401 is the 46476-th centered octagonal number.

It is an amenable number.

8639888401 is a deficient number, since it is larger than the sum of its proper divisors (92952).

8639888401 is an frugal number, since it uses more digits than its factorization.

8639888401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185902 (or 92951 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 55.

The cubic root of 8639888401 is about 2051.9623011774.

The spelling of 8639888401 in words is "eight billion, six hundred thirty-nine million, eight hundred eighty-eight thousand, four hundred one".