1949923 has 4 divisors (see below), whose sum is σ = 1986768. Its totient is φ = 1913080.

The previous prime is 1949911. The next prime is 1949929. The reversal of 1949923 is 3299491.

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-1949923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1949929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18343 + ... + 18448.

It is an arithmetic number, because the mean of its divisors is an integer number (496692).

2^1949923 is an apocalyptic number.

1949923 is a deficient number, since it is larger than the sum of its proper divisors (36845).

1949923 is an equidigital number, since it uses as much as digits as its factorization.

1949923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36844.

The product of its digits is 17496, while the sum is 37.

The square root of 1949923 is about 1396.3964336821. The cubic root of 1949923 is about 124.9316533033.

The spelling of 1949923 in words is "one million, nine hundred forty-nine thousand, nine hundred twenty-three".