82917909 has 6 divisors (see below), whose sum is σ = 119770326. Its totient is φ = 55278600.

The previous prime is 82917907. The next prime is 82917929. The reversal of 82917909 is 90971928.

It can be written as a sum of positive squares in only one way, i.e., 68310225 + 14607684 = 8265^2 + 3822^2 .

It is not a de Polignac number, because 82917909 - 2¹ = 82917907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82917907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4606542 + ... + 4606559.

It is an arithmetic number, because the mean of its divisors is an integer number (19961721).

Almost surely, 2^82917909 is an apocalyptic number.

It is an amenable number.

82917909 is a deficient number, since it is larger than the sum of its proper divisors (36852417).

82917909 is a wasteful number, since it uses less digits than its factorization.

82917909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9213107 (or 9213104 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 82917909 is about 9105.9271356628. The cubic root of 82917909 is about 436.0632097706.

The spelling of 82917909 in words is "eighty-two million, nine hundred seventeen thousand, nine hundred nine".