84604921 has 8 divisors (see below), whose sum is σ = 88185344. Its totient is φ = 81077760.

The previous prime is 84604901. The next prime is 84604939. The reversal of 84604921 is 12940648.

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

It is a cyclic number.

It is not a de Polignac number, because 84604921 - 2⁵ = 84604889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84604901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10056 + ... + 16441.

It is an arithmetic number, because the mean of its divisors is an integer number (11023168).

Almost surely, 2^84604921 is an apocalyptic number.

It is an amenable number.

84604921 is a deficient number, since it is larger than the sum of its proper divisors (3580423).

84604921 is a wasteful number, since it uses less digits than its factorization.

84604921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26631.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 84604921 is about 9198.0933350342. The cubic root of 84604921 is about 439.0006953045. Note that the first 3 decimals are identical.

The spelling of 84604921 in words is "eighty-four million, six hundred four thousand, nine hundred twenty-one".