84159853 has 2 divisors, whose sum is σ = 84159854. Its totient is φ = 84159852.

The previous prime is 84159847. The next prime is 84159857. The reversal of 84159853 is 35895148.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66536649 + 17623204 = 8157^2 + 4198^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84159853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84159857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42079926 + 42079927.

It is an arithmetic number, because the mean of its divisors is an integer number (42079927).

Almost surely, 2^84159853 is an apocalyptic number.

It is an amenable number.

84159853 is a deficient number, since it is larger than the sum of its proper divisors (1).

84159853 is an equidigital number, since it uses as much as digits as its factorization.

84159853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 43.

The square root of 84159853 is about 9173.8679410595. The cubic root of 84159853 is about 438.2295471854.

The spelling of 84159853 in words is "eighty-four million, one hundred fifty-nine thousand, eight hundred fifty-three".