393360493 has 4 divisors (see below), whose sum is σ = 400027680. Its totient is φ = 386693308.

The previous prime is 393360491. The next prime is 393360497. The reversal of 393360493 is 394063393.

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, and also an emirpimes, since its reverse is a distinct semiprime: 394063393 = 23 ⋅17133191.

It is a cyclic number.

It is not a de Polignac number, because 393360493 - 2¹ = 393360491 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 (393360491) 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, 3333505 + ... + 3333622.

It is an arithmetic number, because the mean of its divisors is an integer number (100006920).

Almost surely, 2^393360493 is an apocalyptic number.

It is an amenable number.

393360493 is a deficient number, since it is larger than the sum of its proper divisors (6667187).

393360493 is an equidigital number, since it uses as much as digits as its factorization.

393360493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6667186.

The product of its (nonzero) digits is 157464, while the sum is 40.

The square root of 393360493 is about 19833.3177506942. The cubic root of 393360493 is about 732.7068412211.

The spelling of 393360493 in words is "three hundred ninety-three million, three hundred sixty thousand, four hundred ninety-three".