243429629 has 4 divisors (see below), whose sum is σ = 244377084. Its totient is φ = 242482176.

The previous prime is 243429607. The next prime is 243429661. The reversal of 243429629 is 926924342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 926924342 = 2 ⋅463462171.

It can be written as a sum of positive squares in 2 ways, for example, as 239320900 + 4108729 = 15470^2 + 2027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243429629 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 (243422629) 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, 473342 + ... + 473855.

It is an arithmetic number, because the mean of its divisors is an integer number (61094271).

Almost surely, 2^243429629 is an apocalyptic number.

It is an amenable number.

243429629 is a deficient number, since it is larger than the sum of its proper divisors (947455).

243429629 is an equidigital number, since it uses as much as digits as its factorization.

243429629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947454.

The product of its digits is 186624, while the sum is 41.

The square root of 243429629 is about 15602.2315391100. The cubic root of 243429629 is about 624.3926934906.

The spelling of 243429629 in words is "two hundred forty-three million, four hundred twenty-nine thousand, six hundred twenty-nine".