1922489 has 4 divisors (see below), whose sum is σ = 1944180. Its totient is φ = 1900800.

The previous prime is 1922471. The next prime is 1922491. The reversal of 1922489 is 9842291.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1081600 + 840889 = 1040^2 + 917^2 .

It is a cyclic number.

It is not a de Polignac number, because 1922489 - 2⁸ = 1922233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1922429) 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, 10712 + ... + 10889.

It is an arithmetic number, because the mean of its divisors is an integer number (486045).

2^1922489 is an apocalyptic number.

It is an amenable number.

1922489 is a deficient number, since it is larger than the sum of its proper divisors (21691).

1922489 is an equidigital number, since it uses as much as digits as its factorization.

1922489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21690.

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

The square root of 1922489 is about 1386.5384956791. The cubic root of 1922489 is about 124.3429846976.

The spelling of 1922489 in words is "one million, nine hundred twenty-two thousand, four hundred eighty-nine".