84029389 has 2 divisors, whose sum is σ = 84029390. Its totient is φ = 84029388.

The previous prime is 84029371. The next prime is 84029411. The reversal of 84029389 is 98392048.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58446025 + 25583364 = 7645^2 + 5058^2 .

It is a cyclic number.

It is not a de Polignac number, because 84029389 - 2¹¹ = 84027341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84029329) 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, 42014694 + 42014695.

It is an arithmetic number, because the mean of its divisors is an integer number (42014695).

Almost surely, 2^84029389 is an apocalyptic number.

It is an amenable number.

84029389 is a deficient number, since it is larger than the sum of its proper divisors (1).

84029389 is an equidigital number, since it uses as much as digits as its factorization.

84029389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 84029389 is about 9166.7545510939. The cubic root of 84029389 is about 438.0029833064.

The spelling of 84029389 in words is "eighty-four million, twenty-nine thousand, three hundred eighty-nine".