1940849 has 2 divisors, whose sum is σ = 1940850. Its totient is φ = 1940848.

The previous prime is 1940833. The next prime is 1940881. The reversal of 1940849 is 9480491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1940449 + 400 = 1393^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 1940849 - 2⁴ = 1940833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1940149) 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 as a sum of consecutive naturals, namely, 970424 + 970425.

It is an arithmetic number, because the mean of its divisors is an integer number (970425).

2^1940849 is an apocalyptic number.

It is an amenable number.

1940849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940849 is an equidigital number, since it uses as much as digits as its factorization.

1940849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1940849 is about 1393.1435676196. The cubic root of 1940849 is about 124.7375613934.

The spelling of 1940849 in words is "one million, nine hundred forty thousand, eight hundred forty-nine".