443240342309 has 4 divisors (see below), whose sum is σ = 443497593216. Its totient is φ = 442983091404.

The previous prime is 443240342249. The next prime is 443240342317. The reversal of 443240342309 is 903243042344.

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 a cyclic number.

It is not a de Polignac number, because 443240342309 - 2⁸ = 443240342053 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 (443240342399) 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, 128622869 + ... + 128626314.

It is an arithmetic number, because the mean of its divisors is an integer number (110874398304).

Almost surely, 2^443240342309 is an apocalyptic number.

It is an amenable number.

443240342309 is a deficient number, since it is larger than the sum of its proper divisors (257250907).

443240342309 is a wasteful number, since it uses less digits than its factorization.

443240342309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257250906.

The product of its (nonzero) digits is 248832, while the sum is 38.

The spelling of 443240342309 in words is "four hundred forty-three billion, two hundred forty million, three hundred forty-two thousand, three hundred nine".