1949443 has 4 divisors (see below), whose sum is σ = 1956960. Its totient is φ = 1941928.

The previous prime is 1949417. The next prime is 1949459. The reversal of 1949443 is 3449491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1949443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1949399 and 1949408.

It is not an unprimeable number, because it can be changed into a prime (1949473) 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 3 ways as a sum of consecutive naturals, for example, 3355 + ... + 3892.

It is an arithmetic number, because the mean of its divisors is an integer number (489240).

2^1949443 is an apocalyptic number.

1949443 is a deficient number, since it is larger than the sum of its proper divisors (7517).

1949443 is an equidigital number, since it uses as much as digits as its factorization.

1949443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7516.

The product of its digits is 15552, while the sum is 34.

The square root of 1949443 is about 1396.2245521405. The cubic root of 1949443 is about 124.9214012549.

The spelling of 1949443 in words is "one million, nine hundred forty-nine thousand, four hundred forty-three".