84375905 has 8 divisors (see below), whose sum is σ = 102254184. Its totient is φ = 66832000.

The previous prime is 84375901. The next prime is 84375943. The reversal of 84375905 is 50957348.

It can be written as a sum of positive squares in 4 ways, for example, as 22344529 + 62031376 = 4727^2 + 7876^2 .

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

It is not a de Polignac number, because 84375905 - 2² = 84375901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84375901) 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 7 ways as a sum of consecutive naturals, for example, 83036 + ... + 84045.

It is an arithmetic number, because the mean of its divisors is an integer number (12781773).

Almost surely, 2^84375905 is an apocalyptic number.

It is an amenable number.

84375905 is a deficient number, since it is larger than the sum of its proper divisors (17878279).

84375905 is a wasteful number, since it uses less digits than its factorization.

84375905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167187.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 84375905 is about 9185.6357972652. The cubic root of 84375905 is about 438.6042288662.

The spelling of 84375905 in words is "eighty-four million, three hundred seventy-five thousand, nine hundred five".