8279889 has 4 divisors (see below), whose sum is σ = 11039856. Its totient is φ = 5519924.

The previous prime is 8279881. The next prime is 8279899. The reversal of 8279889 is 9889728.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8279889 - 2³ = 8279881 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8279881) 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, 1379979 + ... + 1379984.

It is an arithmetic number, because the mean of its divisors is an integer number (2759964).

Almost surely, 2^8279889 is an apocalyptic number.

It is an amenable number.

8279889 is a deficient number, since it is larger than the sum of its proper divisors (2759967).

8279889 is a wasteful number, since it uses less digits than its factorization.

8279889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759966.

The product of its digits is 580608, while the sum is 51.

The square root of 8279889 is about 2877.4796263397. The cubic root of 8279889 is about 202.3057243586.

The spelling of 8279889 in words is "eight million, two hundred seventy-nine thousand, eight hundred eighty-nine".