1386811 has 2 divisors, whose sum is σ = 1386812. Its totient is φ = 1386810.

The previous prime is 1386787. The next prime is 1386821. The reversal of 1386811 is 1186831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1386811 - 2⁵ = 1386779 is a prime.

It is a Chen prime.

1386811 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1386811.

It is not a weakly prime, because it can be changed into another prime (1386821) 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 as a sum of consecutive naturals, namely, 693405 + 693406.

It is an arithmetic number, because the mean of its divisors is an integer number (693406).

2^1386811 is an apocalyptic number.

1386811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386811 is an equidigital number, since it uses as much as digits as its factorization.

1386811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 28.

The square root of 1386811 is about 1177.6293984102. The cubic root of 1386811 is about 111.5164902849.

It can be divided in two parts, 1386 and 811, that added together give a cube (2197 = 13³).

The spelling of 1386811 in words is "one million, three hundred eighty-six thousand, eight hundred eleven".