1386973 has 4 divisors (see below), whose sum is σ = 1585120. Its totient is φ = 1188828.

The previous prime is 1386953. The next prime is 1386977. The reversal of 1386973 is 3796831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1386973 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386977) 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, 99063 + ... + 99076.

It is an arithmetic number, because the mean of its divisors is an integer number (396280).

2^1386973 is an apocalyptic number.

It is an amenable number.

1386973 is a deficient number, since it is larger than the sum of its proper divisors (198147).

1386973 is an equidigital number, since it uses as much as digits as its factorization.

1386973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198146.

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

The square root of 1386973 is about 1177.6981786519. The cubic root of 1386973 is about 111.5208323734.

The spelling of 1386973 in words is "one million, three hundred eighty-six thousand, nine hundred seventy-three".