84418321 has 8 divisors (see below), whose sum is σ = 92453760. Its totient is φ = 76603152.

The previous prime is 84418319. The next prime is 84418337. The reversal of 84418321 is 12381448.

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 84418321 - 2¹ = 84418319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84418351) 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, 54265 + ... + 55798.

It is an arithmetic number, because the mean of its divisors is an integer number (11556720).

Almost surely, 2^84418321 is an apocalyptic number.

It is an amenable number.

84418321 is a deficient number, since it is larger than the sum of its proper divisors (8035439).

84418321 is a wasteful number, since it uses less digits than its factorization.

84418321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110135.

The product of its digits is 6144, while the sum is 31.

The square root of 84418321 is about 9187.9443293916. The cubic root of 84418321 is about 438.6777124057.

Adding to 84418321 its reverse (12381448), we get a palindrome (96799769).

The spelling of 84418321 in words is "eighty-four million, four hundred eighteen thousand, three hundred twenty-one".