84398505 has 8 divisors (see below), whose sum is σ = 135037632. Its totient is φ = 45012528.

The previous prime is 84398491. The next prime is 84398521. The reversal of 84398505 is 50589348.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84398505 - 2⁵ = 84398473 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2813269 + ... + 2813298.

It is an arithmetic number, because the mean of its divisors is an integer number (16879704).

Almost surely, 2^84398505 is an apocalyptic number.

It is an amenable number.

84398505 is a deficient number, since it is larger than the sum of its proper divisors (50639127).

84398505 is a wasteful number, since it uses less digits than its factorization.

84398505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5626575.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 84398505 is about 9186.8658964850. The cubic root of 84398505 is about 438.6433852687.

The spelling of 84398505 in words is "eighty-four million, three hundred ninety-eight thousand, five hundred five".