439242117 has 4 divisors (see below), whose sum is σ = 585656160. Its totient is φ = 292828076.

The previous prime is 439241993. The next prime is 439242137. The reversal of 439242117 is 711242934.

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 439242117 - 2¹¹ = 439240069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439242137) 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, 73207017 + ... + 73207022.

It is an arithmetic number, because the mean of its divisors is an integer number (146414040).

Almost surely, 2^439242117 is an apocalyptic number.

It is an amenable number.

439242117 is a deficient number, since it is larger than the sum of its proper divisors (146414043).

439242117 is a wasteful number, since it uses less digits than its factorization.

439242117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146414042.

The product of its digits is 12096, while the sum is 33.

The square root of 439242117 is about 20958.1038503010. The cubic root of 439242117 is about 760.1535452694.

It can be divided in two parts, 439 and 242117, that added together give a triangular number (242556 = T₆₉₆).

The spelling of 439242117 in words is "four hundred thirty-nine million, two hundred forty-two thousand, one hundred seventeen".