984821423 has 4 divisors (see below), whose sum is σ = 1016589888. Its totient is φ = 953052960.

The previous prime is 984821377. The next prime is 984821437. The reversal of 984821423 is 324128489.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 984821423 - 2¹⁴ = 984805039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (984821443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15884186 + ... + 15884247.

It is an arithmetic number, because the mean of its divisors is an integer number (254147472).

Almost surely, 2^984821423 is an apocalyptic number.

984821423 is a deficient number, since it is larger than the sum of its proper divisors (31768465).

984821423 is a wasteful number, since it uses less digits than its factorization.

984821423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31768464.

The product of its digits is 110592, while the sum is 41.

The square root of 984821423 is about 31381.8645558227. The cubic root of 984821423 is about 994.9146574615.

The spelling of 984821423 in words is "nine hundred eighty-four million, eight hundred twenty-one thousand, four hundred twenty-three".