84237881 has 24 divisors (see below), whose sum is σ = 107656704. Its totient is φ = 64471680.

The previous prime is 84237833. The next prime is 84237893. The reversal of 84237881 is 18873248.

It is not a de Polignac number, because 84237881 - 2²² = 80043577 is a prime.

It is a super-2 number, since 2×84237881² = 14192041190740322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84237481) 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 23 ways as a sum of consecutive naturals, for example, 35525 + ... + 37821.

It is an arithmetic number, because the mean of its divisors is an integer number (4485696).

Almost surely, 2^84237881 is an apocalyptic number.

It is an amenable number.

84237881 is a deficient number, since it is larger than the sum of its proper divisors (23418823).

84237881 is a wasteful number, since it uses less digits than its factorization.

84237881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361 (or 2348 counting only the distinct ones).

The product of its digits is 86016, while the sum is 41.

The square root of 84237881 is about 9178.1196876049. The cubic root of 84237881 is about 438.3649387913.

The spelling of 84237881 in words is "eighty-four million, two hundred thirty-seven thousand, eight hundred eighty-one".