1394891 has 2 divisors, whose sum is σ = 1394892. Its totient is φ = 1394890.

The previous prime is 1394857. The next prime is 1394893. The reversal of 1394891 is 1984931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1394891 is a prime.

Together with 1394893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1394893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697445 + 697446.

It is an arithmetic number, because the mean of its divisors is an integer number (697446).

2^1394891 is an apocalyptic number.

1394891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394891 is an equidigital number, since it uses as much as digits as its factorization.

1394891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 35.

The square root of 1394891 is about 1181.0550368209. The cubic root of 1394891 is about 111.7326478203.

The spelling of 1394891 in words is "one million, three hundred ninety-four thousand, eight hundred ninety-one".