1940985 has 12 divisors (see below), whose sum is σ = 3364452. Its totient is φ = 1035168.

The previous prime is 1940971. The next prime is 1940987. The reversal of 1940985 is 5890491.

It can be written as a sum of positive squares in 2 ways, for example, as 558009 + 1382976 = 747^2 + 1176^2 .

It is not a de Polignac number, because 1940985 - 2⁹ = 1940473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940987) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21522 + ... + 21611.

It is an arithmetic number, because the mean of its divisors is an integer number (280371).

2^1940985 is an apocalyptic number.

1940985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1940985 is a deficient number, since it is larger than the sum of its proper divisors (1423467).

1940985 is a wasteful number, since it uses less digits than its factorization.

1940985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43144 (or 43141 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1940985 is about 1393.1923772401. The cubic root of 1940985 is about 124.7404748799.

The spelling of 1940985 in words is "one million, nine hundred forty thousand, nine hundred eighty-five".