84054390 has 64 divisors (see below), whose sum is σ = 233750016. Its totient is φ = 18945792.

The previous prime is 84054389. The next prime is 84054391. The reversal of 84054390 is 9345048.

It is an interprime number because it is at equal distance from previous prime (84054389) and next prime (84054391).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84054391) 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 31 ways as a sum of consecutive naturals, for example, 12589 + ... + 18071.

It is an arithmetic number, because the mean of its divisors is an integer number (3652344).

Almost surely, 2^84054390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84054390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116875008).

84054390 is an abundant number, since it is smaller than the sum of its proper divisors (149695626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84054390 is a wasteful number, since it uses less digits than its factorization.

84054390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 84054390 is about 9168.1181275112. The cubic root of 84054390 is about 438.0464182160.

The spelling of 84054390 in words is "eighty-four million, fifty-four thousand, three hundred ninety".