1386937 has 4 divisors (see below), whose sum is σ = 1391220. Its totient is φ = 1382656.

The previous prime is 1386929. The next prime is 1386947. The reversal of 1386937 is 7396831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7396831 = 13 ⋅568987.

It can be written as a sum of positive squares in 2 ways, for example, as 364816 + 1022121 = 604^2 + 1011^2 .

It is a cyclic number.

It is not a de Polignac number, because 1386937 - 2³ = 1386929 is a prime.

It is a Duffinian number.

1386937 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1386896 and 1386905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386947) 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 in 3 ways as a sum of consecutive naturals, for example, 1612 + ... + 2317.

It is an arithmetic number, because the mean of its divisors is an integer number (347805).

2^1386937 is an apocalyptic number.

It is an amenable number.

1386937 is a deficient number, since it is larger than the sum of its proper divisors (4283).

1386937 is an equidigital number, since it uses as much as digits as its factorization.

1386937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4282.

The product of its digits is 27216, while the sum is 37.

The square root of 1386937 is about 1177.6828945009. The cubic root of 1386937 is about 111.5198674941.

The spelling of 1386937 in words is "one million, three hundred eighty-six thousand, nine hundred thirty-seven".