1386797 has 6 divisors (see below), whose sum is σ = 1426698. Its totient is φ = 1347984.

The previous prime is 1386787. The next prime is 1386811. The reversal of 1386797 is 7976831.

Added to its reverse (7976831) it gives a triangular number (9363628 = T₄₃₂₇).

It can be written as a sum of positive squares in 3 ways, for example, as 292681 + 1094116 = 541^2 + 1046^2 .

It is not a de Polignac number, because 1386797 - 2⁶ = 1386733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386757) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 863 + ... + 1875.

It is an arithmetic number, because the mean of its divisors is an integer number (237783).

2^1386797 is an apocalyptic number.

It is an amenable number.

1386797 is a deficient number, since it is larger than the sum of its proper divisors (39901).

1386797 is an equidigital number, since it uses as much as digits as its factorization.

1386797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087 (or 1050 counting only the distinct ones).

The product of its digits is 63504, while the sum is 41.

The square root of 1386797 is about 1177.6234542501. The cubic root of 1386797 is about 111.5161150269.

Adding to 1386797 its reverse (7976831), we get a triangular number (9363628 = T₄₃₂₇).

The spelling of 1386797 in words is "one million, three hundred eighty-six thousand, seven hundred ninety-seven".