8279969 has 4 divisors (see below), whose sum is σ = 8767044. Its totient is φ = 7792896.

The previous prime is 8279963. The next prime is 8279983. The reversal of 8279969 is 9699728.

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 5234944 + 3045025 = 2288^2 + 1745^2 .

It is a cyclic number.

It is not a de Polignac number, because 8279969 - 2¹² = 8275873 is a prime.

It is a super-2 number, since 2×8279969² = 137115773281922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8279963) 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, 243512 + ... + 243545.

It is an arithmetic number, because the mean of its divisors is an integer number (2191761).

Almost surely, 2^8279969 is an apocalyptic number.

It is an amenable number.

8279969 is a deficient number, since it is larger than the sum of its proper divisors (487075).

8279969 is a wasteful number, since it uses less digits than its factorization.

8279969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487074.

The product of its digits is 489888, while the sum is 50.

The square root of 8279969 is about 2877.4935273602. The cubic root of 8279969 is about 202.3063759135.

The spelling of 8279969 in words is "eight million, two hundred seventy-nine thousand, nine hundred sixty-nine".