84973129 has 2 divisors, whose sum is σ = 84973130. Its totient is φ = 84973128.

The previous prime is 84973121. The next prime is 84973153. The reversal of 84973129 is 92137948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84548025 + 425104 = 9195^2 + 652^2 .

It is a cyclic number.

It is not a de Polignac number, because 84973129 - 2³ = 84973121 is a prime.

It is not a weakly prime, because it can be changed into another prime (84973121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42486564 + 42486565.

It is an arithmetic number, because the mean of its divisors is an integer number (42486565).

Almost surely, 2^84973129 is an apocalyptic number.

It is an amenable number.

84973129 is a deficient number, since it is larger than the sum of its proper divisors (1).

84973129 is an equidigital number, since it uses as much as digits as its factorization.

84973129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 84973129 is about 9218.0870575190. The cubic root of 84973129 is about 439.6366300934.

The spelling of 84973129 in words is "eighty-four million, nine hundred seventy-three thousand, one hundred twenty-nine".