1386001 has 4 divisors (see below), whose sum is σ = 1391652. Its totient is φ = 1380352.

The previous prime is 1385987. The next prime is 1386013. The reversal of 1386001 is 1006831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1006831 = 7 ⋅143833.

It can be written as a sum of positive squares in 2 ways, for example, as 1345600 + 40401 = 1160^2 + 201^2 .

It is a cyclic number.

It is not a de Polignac number, because 1386001 - 2⁷ = 1385873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1386001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2440 + ... + 2953.

It is an arithmetic number, because the mean of its divisors is an integer number (347913).

2^1386001 is an apocalyptic number.

It is an amenable number.

1386001 is a deficient number, since it is larger than the sum of its proper divisors (5651).

1386001 is an equidigital number, since it uses as much as digits as its factorization.

1386001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5650.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1386001 is about 1177.2854369268. The cubic root of 1386001 is about 111.4947747690.

It can be divided in two parts, 138600 and 1, that added together give a triangular number (138601 = T₅₂₆).

The spelling of 1386001 in words is "one million, three hundred eighty-six thousand, one".