985726549 has 2 divisors, whose sum is σ = 985726550. Its totient is φ = 985726548.

The previous prime is 985726507. The next prime is 985726591. The reversal of 985726549 is 945627589.

It is a balanced prime because it is at equal distance from previous prime (985726507) and next prime (985726591).

It can be written as a sum of positive squares in only one way, i.e., 575664049 + 410062500 = 23993^2 + 20250^2 .

It is a cyclic number.

It is not a de Polignac number, because 985726549 - 2¹⁷ = 985595477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 985726549.

It is a congruent number.

It is a weakly prime.

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, 492863274 + 492863275.

It is an arithmetic number, because the mean of its divisors is an integer number (492863275).

Almost surely, 2^985726549 is an apocalyptic number.

It is an amenable number.

985726549 is a deficient number, since it is larger than the sum of its proper divisors (1).

985726549 is an equidigital number, since it uses as much as digits as its factorization.

985726549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 55.

The square root of 985726549 is about 31396.2824073170. The cubic root of 985726549 is about 995.2193649481.

The spelling of 985726549 in words is "nine hundred eighty-five million, seven hundred twenty-six thousand, five hundred forty-nine".