985729273 has 2 divisors, whose sum is σ = 985729274. Its totient is φ = 985729272.

The previous prime is 985729271. The next prime is 985729279. The reversal of 985729273 is 372927589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 985206544 + 522729 = 31388^2 + 723^2 .

It is a cyclic number.

It is not a de Polignac number, because 985729273 - 2¹ = 985729271 is a prime.

Together with 985729271, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 985729273.

It is not a weakly prime, because it can be changed into another prime (985729271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492864636 + 492864637.

It is an arithmetic number, because the mean of its divisors is an integer number (492864637).

Almost surely, 2^985729273 is an apocalyptic number.

It is an amenable number.

985729273 is a deficient number, since it is larger than the sum of its proper divisors (1).

985729273 is an equidigital number, since it uses as much as digits as its factorization.

985729273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 52.

The square root of 985729273 is about 31396.3257882192. The cubic root of 985729273 is about 995.2202816916.

The spelling of 985729273 in words is "nine hundred eighty-five million, seven hundred twenty-nine thousand, two hundred seventy-three".