443130397 has 4 divisors (see below), whose sum is σ = 462396960. Its totient is φ = 423863836.

The previous prime is 443130361. The next prime is 443130433. The reversal of 443130397 is 793031344.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (443130361) and next prime (443130433).

It is a cyclic number.

It is not a de Polignac number, because 443130397 - 2¹¹ = 443128349 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 (443130307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9633247 + ... + 9633292.

It is an arithmetic number, because the mean of its divisors is an integer number (115599240).

Almost surely, 2^443130397 is an apocalyptic number.

It is an amenable number.

443130397 is a deficient number, since it is larger than the sum of its proper divisors (19266563).

443130397 is a wasteful number, since it uses less digits than its factorization.

443130397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19266562.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 443130397 is about 21050.6626261503. The cubic root of 443130397 is about 762.3899815108.

The spelling of 443130397 in words is "four hundred forty-three million, one hundred thirty thousand, three hundred ninety-seven".