849570289 has 2 divisors, whose sum is σ = 849570290. Its totient is φ = 849570288.

The previous prime is 849570259. The next prime is 849570317. The reversal of 849570289 is 982075948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 803439025 + 46131264 = 28345^2 + 6792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-849570289 is a prime.

It is not a weakly prime, because it can be changed into another prime (849570259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424785144 + 424785145.

It is an arithmetic number, because the mean of its divisors is an integer number (424785145).

Almost surely, 2^849570289 is an apocalyptic number.

It is an amenable number.

849570289 is a deficient number, since it is larger than the sum of its proper divisors (1).

849570289 is an equidigital number, since it uses as much as digits as its factorization.

849570289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 849570289 is about 29147.3890597426. The cubic root of 849570289 is about 947.1085822076.

The spelling of 849570289 in words is "eight hundred forty-nine million, five hundred seventy thousand, two hundred eighty-nine".