243979074 has 32 divisors (see below), whose sum is σ = 542687040. Its totient is φ = 81249696.

The previous prime is 243979063. The next prime is 243979123. The reversal of 243979074 is 470979342.

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 15 ways as a sum of consecutive naturals, for example, 106489 + ... + 108755.

It is an arithmetic number, because the mean of its divisors is an integer number (16958970).

Almost surely, 2^243979074 is an apocalyptic number.

243979074 is an abundant number, since it is smaller than the sum of its proper divisors (298707966).

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

243979074 is a wasteful number, since it uses less digits than its factorization.

243979074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271 (or 4265 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 243979074 is about 15619.8295125139. The cubic root of 243979074 is about 624.8621127283.

The spelling of 243979074 in words is "two hundred forty-three million, nine hundred seventy-nine thousand, seventy-four".