1387393 has 8 divisors (see below), whose sum is σ = 1619712. Its totient is φ = 1163616.

The previous prime is 1387367. The next prime is 1387403. The reversal of 1387393 is 3937831.

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 1387393 - 2⁹ = 1386881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387313) 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, 1780 + ... + 2437.

It is an arithmetic number, because the mean of its divisors is an integer number (202464).

2^1387393 is an apocalyptic number.

It is an amenable number.

1387393 is a deficient number, since it is larger than the sum of its proper divisors (232319).

1387393 is an equidigital number, since it uses as much as digits as its factorization.

1387393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271.

The product of its digits is 13608, while the sum is 34.

The square root of 1387393 is about 1177.8764790928. The cubic root of 1387393 is about 111.5320880653.

The spelling of 1387393 in words is "one million, three hundred eighty-seven thousand, three hundred ninety-three".