1986941 has 6 divisors (see below), whose sum is σ = 2184126. Its totient is φ = 1806200.

The previous prime is 1986923. The next prime is 1986949. The reversal of 1986941 is 1496891.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1092025 + 894916 = 1045^2 + 946^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1986941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1986895 and 1986904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8090 + ... + 8331.

It is an arithmetic number, because the mean of its divisors is an integer number (364021).

2^1986941 is an apocalyptic number.

1986941 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1986941 is a deficient number, since it is larger than the sum of its proper divisors (197185).

1986941 is a wasteful number, since it uses less digits than its factorization.

1986941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16443 (or 16432 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 1986941 is about 1409.5889471757. The cubic root of 1986941 is about 125.7172841547.

The spelling of 1986941 in words is "one million, nine hundred eighty-six thousand, nine hundred forty-one".