82907009 has 4 divisors (see below), whose sum is σ = 82995504. Its totient is φ = 82818516.

The previous prime is 82906981. The next prime is 82907017. The reversal of 82907009 is 90070928.

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 82907009 - 2²⁴ = 66129793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82907009.

It is not an unprimeable number, because it can be changed into a prime (82907029) 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, 42827 + ... + 44720.

It is an arithmetic number, because the mean of its divisors is an integer number (20748876).

Almost surely, 2^82907009 is an apocalyptic number.

It is an amenable number.

82907009 is a deficient number, since it is larger than the sum of its proper divisors (88495).

82907009 is an equidigital number, since it uses as much as digits as its factorization.

82907009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88494.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 82907009 is about 9105.3286047237. The cubic root of 82907009 is about 436.0441013242.

The spelling of 82907009 in words is "eighty-two million, nine hundred seven thousand, nine".