853989347 has 2 divisors, whose sum is σ = 853989348. Its totient is φ = 853989346.

The previous prime is 853989343. The next prime is 853989401. The reversal of 853989347 is 743989358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 853989347 - 2² = 853989343 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 853989292 and 853989301.

It is not a weakly prime, because it can be changed into another prime (853989343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426994673 + 426994674.

It is an arithmetic number, because the mean of its divisors is an integer number (426994674).

Almost surely, 2^853989347 is an apocalyptic number.

853989347 is a deficient number, since it is larger than the sum of its proper divisors (1).

853989347 is an equidigital number, since it uses as much as digits as its factorization.

853989347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 56.

The square root of 853989347 is about 29223.0961227588. The cubic root of 853989347 is about 948.7478783781.

The spelling of 853989347 in words is "eight hundred fifty-three million, nine hundred eighty-nine thousand, three hundred forty-seven".