239765993 has 4 divisors (see below), whose sum is σ = 240721488. Its totient is φ = 238810500.

The previous prime is 239765989. The next prime is 239766013. The reversal of 239765993 is 399567932.

239765993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 239765993 - 2² = 239765989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239765983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477371 + ... + 477872.

It is an arithmetic number, because the mean of its divisors is an integer number (60180372).

Almost surely, 2^239765993 is an apocalyptic number.

It is an amenable number.

239765993 is a deficient number, since it is larger than the sum of its proper divisors (955495).

239765993 is an equidigital number, since it uses as much as digits as its factorization.

239765993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955494.

The product of its digits is 2755620, while the sum is 53.

The square root of 239765993 is about 15484.3789994949. The cubic root of 239765993 is about 621.2444593562.

The spelling of 239765993 in words is "two hundred thirty-nine million, seven hundred sixty-five thousand, nine hundred ninety-three".