1940449 has 9 divisors (see below), whose sum is σ = 2268657. Its totient is φ = 1654884.

The previous prime is 1940447. The next prime is 1940453. The reversal of 1940449 is 9440491.

The square root of 1940449 is 1393.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1940449 - 2¹ = 1940447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1940449.

It is not an unprimeable number, because it can be changed into a prime (1940443) 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 8 ways as a sum of consecutive naturals, for example, 9652 + ... + 9850.

It is an arithmetic number, because the mean of its divisors is an integer number (252073).

2^1940449 is an apocalyptic number.

1940449 is the 1393-rd square number.

1940449 is the 697-th centered octagonal number.

It is an amenable number.

1940449 is a deficient number, since it is larger than the sum of its proper divisors (328208).

1940449 is an frugal number, since it uses more digits than its factorization.

1940449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 206 counting only the distinct ones).

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

The cubic root of 1940449 is about 124.7289915266.

Multiplying 1940449 by its product of nonzero digits (5184), we get a square (10059287616 = 100296²).

The spelling of 1940449 in words is "one million, nine hundred forty thousand, four hundred forty-nine".