84729143 has 2 divisors, whose sum is σ = 84729144. Its totient is φ = 84729142.

The previous prime is 84729103. The next prime is 84729163. The reversal of 84729143 is 34192748.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84729143 - 2⁸ = 84728887 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 84729097 and 84729106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84729103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42364571 + 42364572.

It is an arithmetic number, because the mean of its divisors is an integer number (42364572).

Almost surely, 2^84729143 is an apocalyptic number.

84729143 is a deficient number, since it is larger than the sum of its proper divisors (1).

84729143 is an equidigital number, since it uses as much as digits as its factorization.

84729143 is an odious number, because the sum of its binary digits is odd.

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

The square root of 84729143 is about 9204.8434533130. The cubic root of 84729143 is about 439.2154459190.

The spelling of 84729143 in words is "eighty-four million, seven hundred twenty-nine thousand, one hundred forty-three".