1386749 has 16 divisors (see below), whose sum is σ = 1747200. Its totient is φ = 1093680.

The previous prime is 1386733. The next prime is 1386757. The reversal of 1386749 is 9476831.

It is not a de Polignac number, because 1386749 - 2⁴ = 1386733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4304 + ... + 4614.

It is an arithmetic number, because the mean of its divisors is an integer number (109200).

2^1386749 is an apocalyptic number.

It is an amenable number.

1386749 is a deficient number, since it is larger than the sum of its proper divisors (360451).

1386749 is an equidigital number, since it uses as much as digits as its factorization.

1386749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 331 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 1386749 is about 1177.6030740449. The cubic root of 1386749 is about 111.5148284085.

The spelling of 1386749 in words is "one million, three hundred eighty-six thousand, seven hundred forty-nine".