1393393 has 4 divisors (see below), whose sum is σ = 1396900. Its totient is φ = 1389888.

The previous prime is 1393387. The next prime is 1393397. The reversal of 1393393 is 3933931.

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 667489 + 725904 = 817^2 + 852^2 .

It is a cyclic number.

It is not a de Polignac number, because 1393393 - 2⁵ = 1393361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1393397) 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, 1068 + ... + 1981.

It is an arithmetic number, because the mean of its divisors is an integer number (349225).

2^1393393 is an apocalyptic number.

It is an amenable number.

1393393 is a deficient number, since it is larger than the sum of its proper divisors (3507).

1393393 is an equidigital number, since it uses as much as digits as its factorization.

1393393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3506.

The product of its digits is 6561, while the sum is 31.

The square root of 1393393 is about 1180.4206877211. The cubic root of 1393393 is about 111.6926362213.

The spelling of 1393393 in words is "one million, three hundred ninety-three thousand, three hundred ninety-three".