84347129 has 2 divisors, whose sum is σ = 84347130. Its totient is φ = 84347128.

The previous prime is 84347083. The next prime is 84347147. The reversal of 84347129 is 92174348.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81631225 + 2715904 = 9035^2 + 1648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84347129 is a prime.

It is a super-2 number, since 2×84347129² = 14228876341085282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84347092 and 84347101.

It is not a weakly prime, because it can be changed into another prime (84347189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42173564 + 42173565.

It is an arithmetic number, because the mean of its divisors is an integer number (42173565).

Almost surely, 2^84347129 is an apocalyptic number.

It is an amenable number.

84347129 is a deficient number, since it is larger than the sum of its proper divisors (1).

84347129 is an equidigital number, since it uses as much as digits as its factorization.

84347129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 84347129 is about 9184.0693050521. The cubic root of 84347129 is about 438.5543619033.

The spelling of 84347129 in words is "eighty-four million, three hundred forty-seven thousand, one hundred twenty-nine".