423539221 has 8 divisors (see below), whose sum is σ = 486944640. Its totient is φ = 360858768.

The previous prime is 423539219. The next prime is 423539243. The reversal of 423539221 is 122935324.

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 423539221 - 2¹ = 423539219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423539261) 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, 179986 + ... + 182323.

It is an arithmetic number, because the mean of its divisors is an integer number (60868080).

Almost surely, 2^423539221 is an apocalyptic number.

It is an amenable number.

423539221 is a deficient number, since it is larger than the sum of its proper divisors (63405419).

423539221 is a wasteful number, since it uses less digits than its factorization.

423539221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362483.

The product of its digits is 12960, while the sum is 31.

The square root of 423539221 is about 20580.0685373008. The cubic root of 423539221 is about 750.9849110711.

The spelling of 423539221 in words is "four hundred twenty-three million, five hundred thirty-nine thousand, two hundred twenty-one".