243946117 has 4 divisors (see below), whose sum is σ = 244276960. Its totient is φ = 243615276.

The previous prime is 243946051. The next prime is 243946123. The reversal of 243946117 is 711649342.

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 243946117 - 2¹¹ = 243944069 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 (243946177) 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, 164313 + ... + 165790.

It is an arithmetic number, because the mean of its divisors is an integer number (61069240).

Almost surely, 2^243946117 is an apocalyptic number.

It is an amenable number.

243946117 is a deficient number, since it is larger than the sum of its proper divisors (330843).

243946117 is an equidigital number, since it uses as much as digits as its factorization.

243946117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330842.

The product of its digits is 36288, while the sum is 37.

The square root of 243946117 is about 15618.7745037823. The cubic root of 243946117 is about 624.8339757414.

The spelling of 243946117 in words is "two hundred forty-three million, nine hundred forty-six thousand, one hundred seventeen".