84508829 has 2 divisors, whose sum is σ = 84508830. Its totient is φ = 84508828.

The previous prime is 84508763. The next prime is 84508849. The reversal of 84508829 is 92880548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68724100 + 15784729 = 8290^2 + 3973^2 .

It is a cyclic number.

It is not a de Polignac number, because 84508829 - 2¹² = 84504733 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 84508829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84508849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42254414 + 42254415.

It is an arithmetic number, because the mean of its divisors is an integer number (42254415).

Almost surely, 2^84508829 is an apocalyptic number.

It is an amenable number.

84508829 is a deficient number, since it is larger than the sum of its proper divisors (1).

84508829 is an equidigital number, since it uses as much as digits as its factorization.

84508829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 84508829 is about 9192.8683771715. The cubic root of 84508829 is about 438.8344306040.

The spelling of 84508829 in words is "eighty-four million, five hundred eight thousand, eight hundred twenty-nine".