239870693 has 4 divisors (see below), whose sum is σ = 240804300. Its totient is φ = 238937088.

The previous prime is 239870689. The next prime is 239870707. The reversal of 239870693 is 396078932.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 221354884 + 18515809 = 14878^2 + 4303^2 .

It is a cyclic number.

It is not a de Polignac number, because 239870693 - 2² = 239870689 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239870893) 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 3 ways as a sum of consecutive naturals, for example, 466418 + ... + 466931.

It is an arithmetic number, because the mean of its divisors is an integer number (60201075).

Almost surely, 2^239870693 is an apocalyptic number.

It is an amenable number.

239870693 is a deficient number, since it is larger than the sum of its proper divisors (933607).

239870693 is an equidigital number, since it uses as much as digits as its factorization.

239870693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933606.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 239870693 is about 15487.7594570680. The cubic root of 239870693 is about 621.3348736648.

The spelling of 239870693 in words is "two hundred thirty-nine million, eight hundred seventy thousand, six hundred ninety-three".