243445961 has 8 divisors (see below), whose sum is σ = 277124544. Its totient is φ = 211691920.

The previous prime is 243445931. The next prime is 243446009. The reversal of 243445961 is 169544342.

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

It is a de Polignac number, because none of the positive numbers 2^k-243445961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243445921) 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, 480866 + ... + 481371.

It is an arithmetic number, because the mean of its divisors is an integer number (34640568).

Almost surely, 2^243445961 is an apocalyptic number.

It is an amenable number.

243445961 is a deficient number, since it is larger than the sum of its proper divisors (33678583).

243445961 is a wasteful number, since it uses less digits than its factorization.

243445961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962271.

The product of its digits is 103680, while the sum is 38.

The square root of 243445961 is about 15602.7549170010. The cubic root of 243445961 is about 624.4066569420.

The spelling of 243445961 in words is "two hundred forty-three million, four hundred forty-five thousand, nine hundred sixty-one".