430221997 has 8 divisors (see below), whose sum is σ = 453399200. Its totient is φ = 407098224.

The previous prime is 430221983. The next prime is 430222007. The reversal of 430221997 is 799122034.

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 430221997 - 2¹¹ = 430219949 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 (430221917) 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, 3754 + ... + 29572.

It is an arithmetic number, because the mean of its divisors is an integer number (56674900).

Almost surely, 2^430221997 is an apocalyptic number.

It is an amenable number.

430221997 is a deficient number, since it is larger than the sum of its proper divisors (23177203).

430221997 is a wasteful number, since it uses less digits than its factorization.

430221997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26715.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 430221997 is about 20741.7934856174. The cubic root of 430221997 is about 754.9141004271.

Adding to 430221997 its sum of digits (37), we get a palindrome (430222034).

The spelling of 430221997 in words is "four hundred thirty million, two hundred twenty-one thousand, nine hundred ninety-seven".