239286993 has 16 divisors (see below), whose sum is σ = 348364800. Its totient is φ = 144892880.

The previous prime is 239286977. The next prime is 239287003. The reversal of 239286993 is 399682932.

239286993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 239286993 - 2⁴ = 239286977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (239286973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44968 + ... + 50006.

It is an arithmetic number, because the mean of its divisors is an integer number (21772800).

Almost surely, 2^239286993 is an apocalyptic number.

It is an amenable number.

239286993 is a deficient number, since it is larger than the sum of its proper divisors (109077807).

239286993 is a wasteful number, since it uses less digits than its factorization.

239286993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6492.

The product of its digits is 1259712, while the sum is 51.

The square root of 239286993 is about 15468.9040658994. The cubic root of 239286993 is about 620.8304800473.

The spelling of 239286993 in words is "two hundred thirty-nine million, two hundred eighty-six thousand, nine hundred ninety-three".