658940393 has 4 divisors (see below), whose sum is σ = 660661248. Its totient is φ = 657219540.

The previous prime is 658940369. The next prime is 658940411. The reversal of 658940393 is 393049856.

658940393 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 658940393 - 2¹⁸ = 658678249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (658940353) 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, 859853 + ... + 860618.

It is an arithmetic number, because the mean of its divisors is an integer number (165165312).

Almost surely, 2^658940393 is an apocalyptic number.

It is an amenable number.

658940393 is a deficient number, since it is larger than the sum of its proper divisors (1720855).

658940393 is a wasteful number, since it uses less digits than its factorization.

658940393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720854.

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 658940393 is about 25669.8343002054. The cubic root of 658940393 is about 870.1925821084.

The spelling of 658940393 in words is "six hundred fifty-eight million, nine hundred forty thousand, three hundred ninety-three".