84238087 has 4 divisors (see below), whose sum is σ = 84256480. Its totient is φ = 84219696.

The previous prime is 84238081. The next prime is 84238097. The reversal of 84238087 is 78083248.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 84238087 - 2³ = 84238079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84238081) 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, 3739 + ... + 13507.

It is an arithmetic number, because the mean of its divisors is an integer number (21064120).

Almost surely, 2^84238087 is an apocalyptic number.

84238087 is a deficient number, since it is larger than the sum of its proper divisors (18393).

84238087 is an equidigital number, since it uses as much as digits as its factorization.

84238087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18392.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 84238087 is about 9178.1309099402. The cubic root of 84238087 is about 438.3652961250.

The spelling of 84238087 in words is "eighty-four million, two hundred thirty-eight thousand, eighty-seven".