84878933 has 4 divisors (see below), whose sum is σ = 85630188. Its totient is φ = 84127680.

The previous prime is 84878921. The next prime is 84878951. The reversal of 84878933 is 33987848.

It is a happy number.

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 42797764 + 42081169 = 6542^2 + 6487^2 .

It is a cyclic number.

It is not a de Polignac number, because 84878933 - 2⁶ = 84878869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84878903) 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, 375458 + ... + 375683.

It is an arithmetic number, because the mean of its divisors is an integer number (21407547).

Almost surely, 2^84878933 is an apocalyptic number.

It is an amenable number.

84878933 is a deficient number, since it is larger than the sum of its proper divisors (751255).

84878933 is a wasteful number, since it uses less digits than its factorization.

84878933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751254.

The product of its digits is 1161216, while the sum is 50.

The square root of 84878933 is about 9212.9763377532. The cubic root of 84878933 is about 439.4741186257.

The spelling of 84878933 in words is "eighty-four million, eight hundred seventy-eight thousand, nine hundred thirty-three".