1393871 has 2 divisors, whose sum is σ = 1393872. Its totient is φ = 1393870.

The previous prime is 1393837. The next prime is 1393883. The reversal of 1393871 is 1783931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1393871 - 2⁶ = 1393807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1393831) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696935 + 696936.

It is an arithmetic number, because the mean of its divisors is an integer number (696936).

2^1393871 is an apocalyptic number.

1393871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393871 is an equidigital number, since it uses as much as digits as its factorization.

1393871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 1393871 is about 1180.6231405491. The cubic root of 1393871 is about 111.7054067214.

The spelling of 1393871 in words is "one million, three hundred ninety-three thousand, eight hundred seventy-one".