243478867 has 8 divisors (see below), whose sum is σ = 260000640. Its totient is φ = 227498880.

The previous prime is 243478769. The next prime is 243478883. The reversal of 243478867 is 768874342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243478867 - 2²³ = 235090259 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243478867.

It is not an unprimeable number, because it can be changed into a prime (243470867) 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 7 ways as a sum of consecutive naturals, for example, 134518 + ... + 136315.

It is an arithmetic number, because the mean of its divisors is an integer number (32500080).

Almost surely, 2^243478867 is an apocalyptic number.

243478867 is a deficient number, since it is larger than the sum of its proper divisors (16521773).

243478867 is a wasteful number, since it uses less digits than its factorization.

243478867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270893.

The product of its digits is 1806336, while the sum is 49.

The square root of 243478867 is about 15603.8093746367. The cubic root of 243478867 is about 624.4347888523.

The spelling of 243478867 in words is "two hundred forty-three million, four hundred seventy-eight thousand, eight hundred sixty-seven".