84659121 has 8 divisors (see below), whose sum is σ = 125420960. Its totient is φ = 56439396.

The previous prime is 84659093. The next prime is 84659153. The reversal of 84659121 is 12195648.

84659121 is a `hidden beast` number, since 8 + 46 + 591 + 21 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-84659121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84659191) 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, 1567735 + ... + 1567788.

It is an arithmetic number, because the mean of its divisors is an integer number (15677620).

Almost surely, 2^84659121 is an apocalyptic number.

It is an amenable number.

84659121 is a deficient number, since it is larger than the sum of its proper divisors (40761839).

84659121 is a wasteful number, since it uses less digits than its factorization.

84659121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135532 (or 3135526 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 84659121 is about 9201.0391260987. The cubic root of 84659121 is about 439.0944201858.

The spelling of 84659121 in words is "eighty-four million, six hundred fifty-nine thousand, one hundred twenty-one".