243813469 has 12 divisors (see below), whose sum is σ = 256338784. Its totient is φ = 231838992.

The previous prime is 243813431. The next prime is 243813497. The reversal of 243813469 is 964318342.

It is a happy number.

It is not a de Polignac number, because 243813469 - 2¹³ = 243805277 is a prime.

It is a super-2 number, since 2×243813469² = 118890015331627922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243813499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54184 + ... + 58510.

Almost surely, 2^243813469 is an apocalyptic number.

243813469 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

243813469 is a deficient number, since it is larger than the sum of its proper divisors (12525315).

243813469 is an equidigital number, since it uses as much as digits as its factorization.

243813469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4452 (or 4423 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 243813469 is about 15614.5274984548. The cubic root of 243813469 is about 624.7207020869.

The spelling of 243813469 in words is "two hundred forty-three million, eight hundred thirteen thousand, four hundred sixty-nine".