243454849 has 4 divisors (see below), whose sum is σ = 265587120. Its totient is φ = 221322580.

The previous prime is 243454837. The next prime is 243454867. The reversal of 243454849 is 948454342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243454849 - 2²⁵ = 209900417 is a prime.

It is a super-2 number, since 2×243454849² = 118540527003225602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243454649) 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, 11066119 + ... + 11066140.

It is an arithmetic number, because the mean of its divisors is an integer number (66396780).

Almost surely, 2^243454849 is an apocalyptic number.

It is an amenable number.

243454849 is a deficient number, since it is larger than the sum of its proper divisors (22132271).

243454849 is a wasteful number, since it uses less digits than its factorization.

243454849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22132270.

The product of its digits is 552960, while the sum is 43.

The square root of 243454849 is about 15603.0397358976. The cubic root of 243454849 is about 624.4142556973.

The spelling of 243454849 in words is "two hundred forty-three million, four hundred fifty-four thousand, eight hundred forty-nine".