243400441 has 8 divisors (see below), whose sum is σ = 259161120. Its totient is φ = 227800128.

The previous prime is 243400427. The next prime is 243400457. The reversal of 243400441 is 144004342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243400441 - 2¹³ = 243392249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243400471) 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, 36951 + ... + 43036.

It is an arithmetic number, because the mean of its divisors is an integer number (32395140).

Almost surely, 2^243400441 is an apocalyptic number.

It is an amenable number.

243400441 is a deficient number, since it is larger than the sum of its proper divisors (15760679).

243400441 is a wasteful number, since it uses less digits than its factorization.

243400441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80183.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 243400441 is about 15601.2961320526. The cubic root of 243400441 is about 624.3677369251.

Adding to 243400441 its reverse (144004342), we get a palindrome (387404783).

The spelling of 243400441 in words is "two hundred forty-three million, four hundred thousand, four hundred forty-one".