239804973 has 12 divisors (see below), whose sum is σ = 358329660. Its totient is φ = 154357056.

The previous prime is 239804963. The next prime is 239804977. The reversal of 239804973 is 379408932.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 61261929 + 178543044 = 7827^2 + 13362^2 .

It is not a de Polignac number, because 239804973 - 2¹² = 239800877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239804977) 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 11 ways as a sum of consecutive naturals, for example, 459136 + ... + 459657.

It is an arithmetic number, because the mean of its divisors is an integer number (29860805).

Almost surely, 2^239804973 is an apocalyptic number.

It is an amenable number.

239804973 is a deficient number, since it is larger than the sum of its proper divisors (118524687).

239804973 is a wasteful number, since it uses less digits than its factorization.

239804973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918828 (or 918825 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 239804973 is about 15485.6376362099. The cubic root of 239804973 is about 621.2781238424.

The spelling of 239804973 in words is "two hundred thirty-nine million, eight hundred four thousand, nine hundred seventy-three".