8726009 has 4 divisors (see below), whose sum is σ = 8751504. Its totient is φ = 8700516.

The previous prime is 8725999. The next prime is 8726017. The reversal of 8726009 is 9006278.

8726009 is digitally balanced in base 2, 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 Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9006278 = 2 ⋅4503139.

It is a cyclic number.

It is not a de Polignac number, because 8726009 - 2¹² = 8721913 is a prime.

It is a super-2 number, since 2×8726009² = 152286466136162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8726209) 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, 12227 + ... + 12920.

It is an arithmetic number, because the mean of its divisors is an integer number (2187876).

Almost surely, 2^8726009 is an apocalyptic number.

It is an amenable number.

8726009 is a deficient number, since it is larger than the sum of its proper divisors (25495).

8726009 is a wasteful number, since it uses less digits than its factorization.

8726009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25494.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 8726009 is about 2953.9818889086. The cubic root of 8726009 is about 205.8757616409.

The spelling of 8726009 in words is "eight million, seven hundred twenty-six thousand, nine".