243459797 has 4 divisors (see below), whose sum is σ = 278239776. Its totient is φ = 208679820.

The previous prime is 243459791. The next prime is 243459803. The reversal of 243459797 is 797954342.

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 an interprime number because it is at equal distance from previous prime (243459791) and next prime (243459803).

It is a cyclic number.

It is not a de Polignac number, because 243459797 - 2¹⁴ = 243443413 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 (243459791) 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, 17389979 + ... + 17389992.

It is an arithmetic number, because the mean of its divisors is an integer number (69559944).

Almost surely, 2^243459797 is an apocalyptic number.

It is an amenable number.

243459797 is a deficient number, since it is larger than the sum of its proper divisors (34779979).

243459797 is an equidigital number, since it uses as much as digits as its factorization.

243459797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34779978.

The product of its digits is 1905120, while the sum is 50.

The square root of 243459797 is about 15603.1982939396. The cubic root of 243459797 is about 624.4184858873.

The spelling of 243459797 in words is "two hundred forty-three million, four hundred fifty-nine thousand, seven hundred ninety-seven".