84288419 has 4 divisors (see below), whose sum is σ = 84438696. Its totient is φ = 84138144.

The previous prime is 84288401. The next prime is 84288443. The reversal of 84288419 is 91488248.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84288419 is a prime.

It is a super-2 number, since 2×84288419² = 14209075155039122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84288419.

It is not an unprimeable number, because it can be changed into a prime (84288019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74294 + ... + 75419.

It is an arithmetic number, because the mean of its divisors is an integer number (21109674).

Almost surely, 2^84288419 is an apocalyptic number.

84288419 is a deficient number, since it is larger than the sum of its proper divisors (150277).

84288419 is a wasteful number, since it uses less digits than its factorization.

84288419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150276.

The product of its digits is 147456, while the sum is 44.

The square root of 84288419 is about 9180.8724530951. The cubic root of 84288419 is about 438.4525860512.

The spelling of 84288419 in words is "eighty-four million, two hundred eighty-eight thousand, four hundred nineteen".