1386940 has 24 divisors (see below), whose sum is σ = 3007872. Its totient is φ = 536640.

The previous prime is 1386929. The next prime is 1386947. The reversal of 1386940 is 496831.

It is a Harshad number since it is a multiple of its sum of digits (31).

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 7 ways as a sum of consecutive naturals, for example, 499 + ... + 1738.

It is an arithmetic number, because the mean of its divisors is an integer number (125328).

2^1386940 is an apocalyptic number.

1386940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1386940 is an abundant number, since it is smaller than the sum of its proper divisors (1620932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1386940 is a wasteful number, since it uses less digits than its factorization.

1386940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277 (or 2275 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1386940 is about 1177.6841681877. The cubic root of 1386940 is about 111.5199479013.

The spelling of 1386940 in words is "one million, three hundred eighty-six thousand, nine hundred forty".