1001386 has 4 divisors (see below), whose sum is σ = 1502082. Its totient is φ = 500692.

The previous prime is 1001381. The next prime is 1001387. The reversal of 1001386 is 6831001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6831001 = 773 ⋅8837.

It can be written as a sum of positive squares in only one way, i.e., 670761 + 330625 = 819^2 + 575^2 .

It is not an unprimeable number, because it can be changed into a prime (1001381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250345 + ... + 250348.

2^1001386 is an apocalyptic number.

1001386 is a deficient number, since it is larger than the sum of its proper divisors (500696).

1001386 is an equidigital number, since it uses as much as digits as its factorization.

1001386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500695.

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

The square root of 1001386 is about 1000.6927600418. The cubic root of 1001386 is about 100.0461786720.

Adding to 1001386 its reverse (6831001), we get a palindrome (7832387).

The spelling of 1001386 in words is "one million, one thousand, three hundred eighty-six".