84378387 has 8 divisors (see below), whose sum is σ = 112988304. Its totient is φ = 56010368.

The previous prime is 84378377. The next prime is 84378391. The reversal of 84378387 is 78387348.

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 84378387 - 2⁶ = 84378323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84378337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59658 + ... + 61055.

It is an arithmetic number, because the mean of its divisors is an integer number (14123538).

Almost surely, 2^84378387 is an apocalyptic number.

84378387 is a deficient number, since it is larger than the sum of its proper divisors (28609917).

84378387 is a wasteful number, since it uses less digits than its factorization.

84378387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120949.

The product of its digits is 903168, while the sum is 48.

The square root of 84378387 is about 9185.7708985147. The cubic root of 84378387 is about 438.6085294819.

The spelling of 84378387 in words is "eighty-four million, three hundred seventy-eight thousand, three hundred eighty-seven".