243239479 has 8 divisors (see below), whose sum is σ = 283661600. Its totient is φ = 208490688.

The previous prime is 243239473. The next prime is 243239483. The reversal of 243239479 is 974932342.

It is not a de Polignac number, because 243239479 - 2³ = 243239471 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 (243239471) 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, 354234 + ... + 354919.

It is an arithmetic number, because the mean of its divisors is an integer number (35457700).

Almost surely, 2^243239479 is an apocalyptic number.

243239479 is a deficient number, since it is larger than the sum of its proper divisors (40422121).

243239479 is an frugal number, since it uses more digits than its factorization.

243239479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709174 (or 709160 counting only the distinct ones).

The product of its digits is 326592, while the sum is 43.

The square root of 243239479 is about 15596.1366690601. The cubic root of 243239479 is about 624.2300740118.

The spelling of 243239479 in words is "two hundred forty-three million, two hundred thirty-nine thousand, four hundred seventy-nine".