84939078 has 16 divisors (see below), whose sum is σ = 194146560. Its totient is φ = 24268296.

The previous prime is 84939073. The next prime is 84939079. The reversal of 84939078 is 87093948.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84939073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011138 + ... + 1011221.

It is an arithmetic number, because the mean of its divisors is an integer number (12134160).

Almost surely, 2^84939078 is an apocalyptic number.

84939078 is an abundant number, since it is smaller than the sum of its proper divisors (109207482).

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

84939078 is a wasteful number, since it uses less digits than its factorization.

84939078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022371.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 84939078 is about 9216.2399057316. The cubic root of 84939078 is about 439.5778975382.

It can be divided in two parts, 8493 and 9078, that added together give a palindrome (17571).

The spelling of 84939078 in words is "eighty-four million, nine hundred thirty-nine thousand, seventy-eight".