1394387 has 4 divisors (see below), whose sum is σ = 1399440. Its totient is φ = 1389336.

The previous prime is 1394383. The next prime is 1394389. The reversal of 1394387 is 7834931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7834931 = 13 ⋅602687.

It is a cyclic number.

It is not a de Polignac number, because 1394387 - 2² = 1394383 is a prime.

It is a super-3 number, since 3×1394387³ = 8133383122163755809, which contains 333 as substring.

It is a d-powerful number, because it can be written as 1 + 3⁸ + 9 + 4³ + 3¹² + 8⁵ + 7⁷ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1394383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2087 + ... + 2672.

It is an arithmetic number, because the mean of its divisors is an integer number (349860).

2^1394387 is an apocalyptic number.

1394387 is a deficient number, since it is larger than the sum of its proper divisors (5053).

1394387 is an equidigital number, since it uses as much as digits as its factorization.

1394387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5052.

The product of its digits is 18144, while the sum is 35.

The square root of 1394387 is about 1180.8416489945. The cubic root of 1394387 is about 111.7191891730.

The spelling of 1394387 in words is "one million, three hundred ninety-four thousand, three hundred eighty-seven".