243422439 has 32 divisors (see below), whose sum is σ = 371314944. Its totient is φ = 140520960.

The previous prime is 243422401. The next prime is 243422479. The reversal of 243422439 is 934224342.

243422439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243422439 - 2¹⁶ = 243356903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243422479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 378252 + ... + 378894.

It is an arithmetic number, because the mean of its divisors is an integer number (11603592).

Almost surely, 2^243422439 is an apocalyptic number.

243422439 is a deficient number, since it is larger than the sum of its proper divisors (127892505).

243422439 is a wasteful number, since it uses less digits than its factorization.

243422439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247.

The product of its digits is 41472, while the sum is 33.

The square root of 243422439 is about 15602.0011216510. The cubic root of 243422439 is about 624.3865460224.

The spelling of 243422439 in words is "two hundred forty-three million, four hundred twenty-two thousand, four hundred thirty-nine".