184479821 has 2 divisors, whose sum is σ = 184479822. Its totient is φ = 184479820.

The previous prime is 184479809. The next prime is 184479839. The reversal of 184479821 is 128974481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184009225 + 470596 = 13565^2 + 686^2 .

It is a cyclic number.

It is not a de Polignac number, because 184479821 - 2¹⁴ = 184463437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (184479851) 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 as a sum of consecutive naturals, namely, 92239910 + 92239911.

It is an arithmetic number, because the mean of its divisors is an integer number (92239911).

Almost surely, 2^184479821 is an apocalyptic number.

It is an amenable number.

184479821 is a deficient number, since it is larger than the sum of its proper divisors (1).

184479821 is an equidigital number, since it uses as much as digits as its factorization.

184479821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 44.

The square root of 184479821 is about 13582.3348876399. The cubic root of 184479821 is about 569.2673679606.

The spelling of 184479821 in words is "one hundred eighty-four million, four hundred seventy-nine thousand, eight hundred twenty-one".