84427838 has 8 divisors (see below), whose sum is σ = 138154680. Its totient is φ = 38376280.

The previous prime is 84427823. The next prime is 84427859. The reversal of 84427838 is 83872448.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1918793 + ... + 1918836.

It is an arithmetic number, because the mean of its divisors is an integer number (17269335).

Almost surely, 2^84427838 is an apocalyptic number.

84427838 is a deficient number, since it is larger than the sum of its proper divisors (53726842).

84427838 is a wasteful number, since it uses less digits than its factorization.

84427838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837642.

The product of its digits is 344064, while the sum is 44.

The square root of 84427838 is about 9188.4622217213. The cubic root of 84427838 is about 438.6941967378.

It can be divided in two parts, 844 and 27838, that added together give a palindrome (28682).

The spelling of 84427838 in words is "eighty-four million, four hundred twenty-seven thousand, eight hundred thirty-eight".