243669379 has 4 divisors (see below), whose sum is σ = 244568800. Its totient is φ = 242769960.

The previous prime is 243669353. The next prime is 243669389. The reversal of 243669379 is 973966342.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243669379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243669329) 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, 449304 + ... + 449845.

It is an arithmetic number, because the mean of its divisors is an integer number (61142200).

Almost surely, 2^243669379 is an apocalyptic number.

243669379 is a deficient number, since it is larger than the sum of its proper divisors (899421).

243669379 is an equidigital number, since it uses as much as digits as its factorization.

243669379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899420.

The product of its digits is 1469664, while the sum is 49.

The square root of 243669379 is about 15609.9128440872. The cubic root of 243669379 is about 624.5976110686.

The spelling of 243669379 in words is "two hundred forty-three million, six hundred sixty-nine thousand, three hundred seventy-nine".