84821854 has 16 divisors (see below), whose sum is σ = 138952800. Its totient is φ = 38596320.

The previous prime is 84821851. The next prime is 84821873. The reversal of 84821854 is 45812848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84821851) 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, 21129 + ... + 24820.

It is an arithmetic number, because the mean of its divisors is an integer number (8684550).

Almost surely, 2^84821854 is an apocalyptic number.

84821854 is a deficient number, since it is larger than the sum of its proper divisors (54130946).

84821854 is a wasteful number, since it uses less digits than its factorization.

84821854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46035.

The product of its digits is 81920, while the sum is 40.

The square root of 84821854 is about 9209.8780665110. The cubic root of 84821854 is about 439.3755846810.

The spelling of 84821854 in words is "eighty-four million, eight hundred twenty-one thousand, eight hundred fifty-four".