853441447 has 2 divisors, whose sum is σ = 853441448. Its totient is φ = 853441446.

The previous prime is 853441367. The next prime is 853441451. The reversal of 853441447 is 744144358.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 853441447 - 2¹¹ = 853439399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853441247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426720723 + 426720724.

It is an arithmetic number, because the mean of its divisors is an integer number (426720724).

Almost surely, 2^853441447 is an apocalyptic number.

853441447 is a deficient number, since it is larger than the sum of its proper divisors (1).

853441447 is an equidigital number, since it uses as much as digits as its factorization.

853441447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 40.

The square root of 853441447 is about 29213.7201841874. The cubic root of 853441447 is about 948.5449366701.

The spelling of 853441447 in words is "eight hundred fifty-three million, four hundred forty-one thousand, four hundred forty-seven".