84475281 has 8 divisors (see below), whose sum is σ = 122873184. Its totient is φ = 51197120.

The previous prime is 84475277. The next prime is 84475319. The reversal of 84475281 is 18257448.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 84475281 - 2² = 84475277 is a prime.

It is a super-2 number, since 2×84475281² = 14272146200057922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84475081) 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, 1279896 + ... + 1279961.

It is an arithmetic number, because the mean of its divisors is an integer number (15359148).

Almost surely, 2^84475281 is an apocalyptic number.

It is an amenable number.

84475281 is a deficient number, since it is larger than the sum of its proper divisors (38397903).

84475281 is a wasteful number, since it uses less digits than its factorization.

84475281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559871.

The product of its digits is 71680, while the sum is 39.

The square root of 84475281 is about 9191.0435207326. The cubic root of 84475281 is about 438.7763539661.

The spelling of 84475281 in words is "eighty-four million, four hundred seventy-five thousand, two hundred eighty-one".