430840997 has 8 divisors (see below), whose sum is σ = 443795352. Its totient is φ = 418003200.

The previous prime is 430840981. The next prime is 430841063. The reversal of 430840997 is 799048034.

It can be written as a sum of positive squares in 4 ways, for example, as 25664356 + 405176641 = 5066^2 + 20129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 430840997 - 2⁴ = 430840981 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 (430840967) 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, 21608 + ... + 36449.

It is an arithmetic number, because the mean of its divisors is an integer number (55474419).

Almost surely, 2^430840997 is an apocalyptic number.

It is an amenable number.

430840997 is a deficient number, since it is larger than the sum of its proper divisors (12954355).

430840997 is a wasteful number, since it uses less digits than its factorization.

430840997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58279.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 430840997 is about 20756.7096862677. The cubic root of 430840997 is about 755.2759817337.

The spelling of 430840997 in words is "four hundred thirty million, eight hundred forty thousand, nine hundred ninety-seven".