867520949 has 2 divisors, whose sum is σ = 867520950. Its totient is φ = 867520948.

The previous prime is 867520937. The next prime is 867520961. The reversal of 867520949 is 949025768.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (867520937) and next prime (867520961).

It can be written as a sum of positive squares in only one way, i.e., 735385924 + 132135025 = 27118^2 + 11495^2 .

It is a cyclic number.

It is not a de Polignac number, because 867520949 - 2⁴ = 867520933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 867520897 and 867520906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (867520909) 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, 433760474 + 433760475.

It is an arithmetic number, because the mean of its divisors is an integer number (433760475).

Almost surely, 2^867520949 is an apocalyptic number.

It is an amenable number.

867520949 is a deficient number, since it is larger than the sum of its proper divisors (1).

867520949 is an equidigital number, since it uses as much as digits as its factorization.

867520949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 867520949 is about 29453.7085780382. The cubic root of 867520949 is about 953.7326642892.

The spelling of 867520949 in words is "eight hundred sixty-seven million, five hundred twenty thousand, nine hundred forty-nine".