1944997 has 2 divisors, whose sum is σ = 1944998. Its totient is φ = 1944996.

The previous prime is 1944991. The next prime is 1945003. The reversal of 1944997 is 7994491.

It is a balanced prime because it is at equal distance from previous prime (1944991) and next prime (1945003).

It can be written as a sum of positive squares in only one way, i.e., 1887876 + 57121 = 1374^2 + 239^2 .

It is an emirp because it is prime and its reverse (7994491) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1944997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1944991) 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, 972498 + 972499.

It is an arithmetic number, because the mean of its divisors is an integer number (972499).

2^1944997 is an apocalyptic number.

It is an amenable number.

1944997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944997 is an equidigital number, since it uses as much as digits as its factorization.

1944997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 1944997 is about 1394.6314925456. The cubic root of 1944997 is about 124.8263615759.

The spelling of 1944997 in words is "one million, nine hundred forty-four thousand, nine hundred ninety-seven".