1386481 has 4 divisors (see below), whose sum is σ = 1393264. Its totient is φ = 1379700.

The previous prime is 1386479. The next prime is 1386491. The reversal of 1386481 is 1846831.

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 not a de Polignac number, because 1386481 - 2¹ = 1386479 is a prime.

It is a super-2 number, since 2×1386481² = 3844659126722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1386491) 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, 3075 + ... + 3496.

It is an arithmetic number, because the mean of its divisors is an integer number (348316).

2^1386481 is an apocalyptic number.

It is an amenable number.

1386481 is a deficient number, since it is larger than the sum of its proper divisors (6783).

1386481 is an equidigital number, since it uses as much as digits as its factorization.

1386481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6782.

The product of its digits is 4608, while the sum is 31.

The square root of 1386481 is about 1177.4892780828. The cubic root of 1386481 is about 111.5076442439.

It can be divided in two parts, 1386 and 481, that multiplied together give a palindrome (666666).

The spelling of 1386481 in words is "one million, three hundred eighty-six thousand, four hundred eighty-one".