867049109 has 2 divisors, whose sum is σ = 867049110. Its totient is φ = 867049108.

The previous prime is 867049103. The next prime is 867049121. The reversal of 867049109 is 901940768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 735602884 + 131446225 = 27122^2 + 11465^2 .

It is a cyclic number.

It is not a de Polignac number, because 867049109 - 2⁴ = 867049093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 867049109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (867049103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433524554 + 433524555.

It is an arithmetic number, because the mean of its divisors is an integer number (433524555).

Almost surely, 2^867049109 is an apocalyptic number.

It is an amenable number.

867049109 is a deficient number, since it is larger than the sum of its proper divisors (1).

867049109 is an equidigital number, since it uses as much as digits as its factorization.

867049109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 867049109 is about 29445.6976314028. The cubic root of 867049109 is about 953.5597229013.

The spelling of 867049109 in words is "eight hundred sixty-seven million, forty-nine thousand, one hundred nine".