243929741 has 4 divisors (see below), whose sum is σ = 266105184. Its totient is φ = 221754300.

The previous prime is 243929737. The next prime is 243929761. The reversal of 243929741 is 147929342.

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 243929741 - 2² = 243929737 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 (243929761) 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, 11087705 + ... + 11087726.

It is an arithmetic number, because the mean of its divisors is an integer number (66526296).

Almost surely, 2^243929741 is an apocalyptic number.

It is an amenable number.

243929741 is a deficient number, since it is larger than the sum of its proper divisors (22175443).

243929741 is a wasteful number, since it uses less digits than its factorization.

243929741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22175442.

The product of its digits is 108864, while the sum is 41.

The square root of 243929741 is about 15618.2502541098. The cubic root of 243929741 is about 624.8199938147.

The spelling of 243929741 in words is "two hundred forty-three million, nine hundred twenty-nine thousand, seven hundred forty-one".