84109029 has 24 divisors (see below), whose sum is σ = 121615200. Its totient is φ = 51661152.

The previous prime is 84109007. The next prime is 84109061. The reversal of 84109029 is 92090148.

It is not a de Polignac number, because 84109029 - 2¹³ = 84100837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84109429) 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 in 23 ways as a sum of consecutive naturals, for example, 39022 + ... + 41120.

It is an arithmetic number, because the mean of its divisors is an integer number (5067300).

Almost surely, 2^84109029 is an apocalyptic number.

It is an amenable number.

84109029 is a deficient number, since it is larger than the sum of its proper divisors (37506171).

84109029 is a wasteful number, since it uses less digits than its factorization.

84109029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 84109029 is about 9171.0974806726. The cubic root of 84109029 is about 438.1413140486.

The spelling of 84109029 in words is "eighty-four million, one hundred nine thousand, twenty-nine".