84853897 has 2 divisors, whose sum is σ = 84853898. Its totient is φ = 84853896.

The previous prime is 84853891. The next prime is 84853927. The reversal of 84853897 is 79835848.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82791801 + 2062096 = 9099^2 + 1436^2 .

It is a cyclic number.

It is not a de Polignac number, because 84853897 - 2²³ = 76465289 is a prime.

It is not a weakly prime, because it can be changed into another prime (84853891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42426948 + 42426949.

It is an arithmetic number, because the mean of its divisors is an integer number (42426949).

Almost surely, 2^84853897 is an apocalyptic number.

It is an amenable number.

84853897 is a deficient number, since it is larger than the sum of its proper divisors (1).

84853897 is an equidigital number, since it uses as much as digits as its factorization.

84853897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1935360, while the sum is 52.

The square root of 84853897 is about 9211.6175018289. The cubic root of 84853897 is about 439.4309050916.

It can be divided in two parts, 848 and 53897, that added together give a palindrome (54745).

The spelling of 84853897 in words is "eighty-four million, eight hundred fifty-three thousand, eight hundred ninety-seven".