84411861 has 16 divisors (see below), whose sum is σ = 115552128. Its totient is φ = 54792000.

The previous prime is 84411857. The next prime is 84411883. The reversal of 84411861 is 16811448.

It is not a de Polignac number, because 84411861 - 2² = 84411857 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84411841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16200 + ... + 20766.

It is an arithmetic number, because the mean of its divisors is an integer number (7222008).

Almost surely, 2^84411861 is an apocalyptic number.

It is an amenable number.

84411861 is a deficient number, since it is larger than the sum of its proper divisors (31140267).

84411861 is a wasteful number, since it uses less digits than its factorization.

84411861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4732.

The product of its digits is 6144, while the sum is 33.

The square root of 84411861 is about 9187.5927750418. The cubic root of 84411861 is about 438.6665223770. Note that the first 3 decimals are identical.

The spelling of 84411861 in words is "eighty-four million, four hundred eleven thousand, eight hundred sixty-one".