84512429 has 2 divisors, whose sum is σ = 84512430. Its totient is φ = 84512428.

The previous prime is 84512411. The next prime is 84512459. The reversal of 84512429 is 92421548.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80910025 + 3602404 = 8995^2 + 1898^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84512429 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84512459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42256214 + 42256215.

It is an arithmetic number, because the mean of its divisors is an integer number (42256215).

Almost surely, 2^84512429 is an apocalyptic number.

It is an amenable number.

84512429 is a deficient number, since it is larger than the sum of its proper divisors (1).

84512429 is an equidigital number, since it uses as much as digits as its factorization.

84512429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 35.

The square root of 84512429 is about 9193.0641790428. The cubic root of 84512429 is about 438.8406618327.

The spelling of 84512429 in words is "eighty-four million, five hundred twelve thousand, four hundred twenty-nine".