243994926 has 16 divisors (see below), whose sum is σ = 557702784. Its totient is φ = 69712824.

The previous prime is 243994889. The next prime is 243994939. The reversal of 243994926 is 629499342.

It is a congruent number.

It is an unprimeable number.

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, 2904660 + ... + 2904743.

It is an arithmetic number, because the mean of its divisors is an integer number (34856424).

Almost surely, 2^243994926 is an apocalyptic number.

243994926 is an abundant number, since it is smaller than the sum of its proper divisors (313707858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243994926 is a wasteful number, since it uses less digits than its factorization.

243994926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5809415.

The product of its digits is 839808, while the sum is 48.

The square root of 243994926 is about 15620.3369361867. The cubic root of 243994926 is about 624.8756454458.

The spelling of 243994926 in words is "two hundred forty-three million, nine hundred ninety-four thousand, nine hundred twenty-six".