439198117 has 4 divisors (see below), whose sum is σ = 443084940. Its totient is φ = 435311296.

The previous prime is 439198079. The next prime is 439198139. The reversal of 439198117 is 711891934.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 177049636 + 262148481 = 13306^2 + 16191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-439198117 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 (439198187) 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, 1943242 + ... + 1943467.

It is an arithmetic number, because the mean of its divisors is an integer number (110771235).

Almost surely, 2^439198117 is an apocalyptic number.

It is an amenable number.

439198117 is a deficient number, since it is larger than the sum of its proper divisors (3886823).

439198117 is a wasteful number, since it uses less digits than its factorization.

439198117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3886822.

The product of its digits is 54432, while the sum is 43.

The square root of 439198117 is about 20957.0541107284. The cubic root of 439198117 is about 760.1281622505.

The spelling of 439198117 in words is "four hundred thirty-nine million, one hundred ninety-eight thousand, one hundred seventeen".