8187279897 has 16 divisors (see below), whose sum is σ = 10944662528. Its totient is φ = 5444061840.

The previous prime is 8187279889. The next prime is 8187279959. The reversal of 8187279897 is 7989727818.

8187279897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8187279897 - 2³ = 8187279889 is a prime.

It is a super-2 number, since 2×8187279897² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8187279817) 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, 2919498 + ... + 2922300.

It is an arithmetic number, because the mean of its divisors is an integer number (684041408).

Almost surely, 2^8187279897 is an apocalyptic number.

It is an amenable number.

8187279897 is a deficient number, since it is larger than the sum of its proper divisors (2757382631).

8187279897 is a wasteful number, since it uses less digits than its factorization.

8187279897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4980.

The product of its digits is 28449792, while the sum is 66.

The square root of 8187279897 is about 90483.5891032180. The cubic root of 8187279897 is about 2015.4864337592.

The spelling of 8187279897 in words is "eight billion, one hundred eighty-seven million, two hundred seventy-nine thousand, eight hundred ninety-seven".