243006939 has 32 divisors (see below), whose sum is σ = 412477440. Its totient is φ = 138511296.

The previous prime is 243006893. The next prime is 243006949. The reversal of 243006939 is 939600342.

It is a happy number.

It is not a de Polignac number, because 243006939 - 2⁸ = 243006683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243006949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86119 + ... + 88895.

It is an arithmetic number, because the mean of its divisors is an integer number (12889920).

Almost surely, 2^243006939 is an apocalyptic number.

243006939 is a deficient number, since it is larger than the sum of its proper divisors (169470501).

243006939 is a wasteful number, since it uses less digits than its factorization.

243006939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256 (or 3250 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 243006939 is about 15588.6798350598. The cubic root of 243006939 is about 624.0310866540.

The spelling of 243006939 in words is "two hundred forty-three million, six thousand, nine hundred thirty-nine".