239440973 has 6 divisors (see below), whose sum is σ = 242367534. Its totient is φ = 236549336.

The previous prime is 239440967. The next prime is 239440987. The reversal of 239440973 is 379044932.

It can be written as a sum of positive squares in only one way, i.e., 178569769 + 60871204 = 13363^2 + 7802^2 .

It is not a de Polignac number, because 239440973 - 2²⁰ = 238392397 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 239440973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239440933) 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 5 ways as a sum of consecutive naturals, for example, 10490 + ... + 24267.

It is an arithmetic number, because the mean of its divisors is an integer number (40394589).

Almost surely, 2^239440973 is an apocalyptic number.

It is an amenable number.

239440973 is a deficient number, since it is larger than the sum of its proper divisors (2926561).

239440973 is an frugal number, since it uses more digits than its factorization.

239440973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34923 (or 34840 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 239440973 is about 15473.8803472174. The cubic root of 239440973 is about 620.9636186109.

The spelling of 239440973 in words is "two hundred thirty-nine million, four hundred forty thousand, nine hundred seventy-three".