84104429 has 4 divisors (see below), whose sum is σ = 84640284. Its totient is φ = 83568576.

The previous prime is 84104411. The next prime is 84104443. The reversal of 84104429 is 92440148.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7279204 + 76825225 = 2698^2 + 8765^2 .

It is a cyclic number.

It is not a de Polignac number, because 84104429 - 2¹² = 84100333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84104395 and 84104404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84104029) 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 3 ways as a sum of consecutive naturals, for example, 267692 + ... + 268005.

It is an arithmetic number, because the mean of its divisors is an integer number (21160071).

Almost surely, 2^84104429 is an apocalyptic number.

It is an amenable number.

84104429 is a deficient number, since it is larger than the sum of its proper divisors (535855).

84104429 is a wasteful number, since it uses less digits than its factorization.

84104429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535854.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 84104429 is about 9170.8466893739. The cubic root of 84104429 is about 438.1333264528.

The spelling of 84104429 in words is "eighty-four million, one hundred four thousand, four hundred twenty-nine".