1340986 has 4 divisors (see below), whose sum is σ = 2011482. Its totient is φ = 670492.

The previous prime is 1340981. The next prime is 1341007. The reversal of 1340986 is 6890431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6890431 = 241 ⋅28591.

It can be written as a sum of positive squares in only one way, i.e., 731025 + 609961 = 855^2 + 781^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1340981) 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 as a sum of consecutive naturals, namely, 335245 + ... + 335248.

2^1340986 is an apocalyptic number.

1340986 is a deficient number, since it is larger than the sum of its proper divisors (670496).

1340986 is an equidigital number, since it uses as much as digits as its factorization.

1340986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670495.

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

The square root of 1340986 is about 1158.0094990975. The cubic root of 1340986 is about 110.2744112899.

The spelling of 1340986 in words is "one million, three hundred forty thousand, nine hundred eighty-six".