867082409 has 2 divisors, whose sum is σ = 867082410. Its totient is φ = 867082408.

The previous prime is 867082361. The next prime is 867082427. The reversal of 867082409 is 904280768.

867082409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 834054400 + 33028009 = 28880^2 + 5747^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-867082409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 867082409.

It is not a weakly prime, because it can be changed into another prime (867082439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433541204 + 433541205.

It is an arithmetic number, because the mean of its divisors is an integer number (433541205).

Almost surely, 2^867082409 is an apocalyptic number.

It is an amenable number.

867082409 is a deficient number, since it is larger than the sum of its proper divisors (1).

867082409 is an equidigital number, since it uses as much as digits as its factorization.

867082409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 867082409 is about 29446.2630736058. The cubic root of 867082409 is about 953.5719302576.

The spelling of 867082409 in words is "eight hundred sixty-seven million, eighty-two thousand, four hundred nine".