873956549 has 2 divisors, whose sum is σ = 873956550. Its totient is φ = 873956548.

The previous prime is 873956497. The next prime is 873956561. The reversal of 873956549 is 945659378.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 642369025 + 231587524 = 25345^2 + 15218^2 .

It is a cyclic number.

It is not a de Polignac number, because 873956549 - 2¹⁶ = 873891013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 873956494 and 873956503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (873956579) 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, 436978274 + 436978275.

It is an arithmetic number, because the mean of its divisors is an integer number (436978275).

Almost surely, 2^873956549 is an apocalyptic number.

It is an amenable number.

873956549 is a deficient number, since it is larger than the sum of its proper divisors (1).

873956549 is an equidigital number, since it uses as much as digits as its factorization.

873956549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 56.

The square root of 873956549 is about 29562.7561130555. The cubic root of 873956549 is about 956.0852401630.

The spelling of 873956549 in words is "eight hundred seventy-three million, nine hundred fifty-six thousand, five hundred forty-nine".