1393813 has 8 divisors (see below), whose sum is σ = 1487808. Its totient is φ = 1301184.

The previous prime is 1393807. The next prime is 1393817. The reversal of 1393813 is 3183931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1393813 - 2⁵ = 1393781 is a prime.

It is a Duffinian number.

1393813 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2520 + ... + 3022.

It is an arithmetic number, because the mean of its divisors is an integer number (185976).

2^1393813 is an apocalyptic number.

It is an amenable number.

1393813 is a deficient number, since it is larger than the sum of its proper divisors (93995).

1393813 is a wasteful number, since it uses less digits than its factorization.

1393813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683.

The product of its digits is 1944, while the sum is 28.

The square root of 1393813 is about 1180.5985769939. The cubic root of 1393813 is about 111.7038573185.

The spelling of 1393813 in words is "one million, three hundred ninety-three thousand, eight hundred thirteen".