867478529 has 2 divisors, whose sum is σ = 867478530. Its totient is φ = 867478528.

The previous prime is 867478523. The next prime is 867478543. The reversal of 867478529 is 925874768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 763030129 + 104448400 = 27623^2 + 10220^2 .

It is a cyclic number.

It is not a de Polignac number, because 867478529 - 2²⁰ = 866429953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (867478523) 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 as a sum of consecutive naturals, namely, 433739264 + 433739265.

It is an arithmetic number, because the mean of its divisors is an integer number (433739265).

Almost surely, 2^867478529 is an apocalyptic number.

It is an amenable number.

867478529 is a deficient number, since it is larger than the sum of its proper divisors (1).

867478529 is an equidigital number, since it uses as much as digits as its factorization.

867478529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 56.

The square root of 867478529 is about 29452.9884561822. The cubic root of 867478529 is about 953.7171188436.

The spelling of 867478529 in words is "eight hundred sixty-seven million, four hundred seventy-eight thousand, five hundred twenty-nine".