84922729 has 2 divisors, whose sum is σ = 84922730. Its totient is φ = 84922728.

The previous prime is 84922727. The next prime is 84922751. The reversal of 84922729 is 92722948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74425129 + 10497600 = 8627^2 + 3240^2 .

It is a cyclic number.

It is not a de Polignac number, because 84922729 - 2¹ = 84922727 is a prime.

Together with 84922727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (84922727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42461364 + 42461365.

It is an arithmetic number, because the mean of its divisors is an integer number (42461365).

Almost surely, 2^84922729 is an apocalyptic number.

It is an amenable number.

84922729 is a deficient number, since it is larger than the sum of its proper divisors (1).

84922729 is an equidigital number, since it uses as much as digits as its factorization.

84922729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 84922729 is about 9215.3528961185. The cubic root of 84922729 is about 439.5496925377.

The spelling of 84922729 in words is "eighty-four million, nine hundred twenty-two thousand, seven hundred twenty-nine".