243514399 has 4 divisors (see below), whose sum is σ = 244093240. Its totient is φ = 242935560.

The previous prime is 243514391. The next prime is 243514423. The reversal of 243514399 is 993415342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243514399 - 2³ = 243514391 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 (243514391) 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, 288789 + ... + 289630.

It is an arithmetic number, because the mean of its divisors is an integer number (61023310).

Almost surely, 2^243514399 is an apocalyptic number.

243514399 is a deficient number, since it is larger than the sum of its proper divisors (578841).

243514399 is an equidigital number, since it uses as much as digits as its factorization.

243514399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578840.

The product of its digits is 116640, while the sum is 40.

The square root of 243514399 is about 15604.9479012267. The cubic root of 243514399 is about 624.4651629294.

The spelling of 243514399 in words is "two hundred forty-three million, five hundred fourteen thousand, three hundred ninety-nine".