1944401 has 2 divisors, whose sum is σ = 1944402. Its totient is φ = 1944400.

The previous prime is 1944389. The next prime is 1944457. The reversal of 1944401 is 1044491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1560001 + 384400 = 1249^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1944401 - 2¹⁸ = 1682257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1940401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972200 + 972201.

It is an arithmetic number, because the mean of its divisors is an integer number (972201).

2^1944401 is an apocalyptic number.

It is an amenable number.

1944401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944401 is an equidigital number, since it uses as much as digits as its factorization.

1944401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1944401 is about 1394.4177996569. The cubic root of 1944401 is about 124.8136102089.

Adding to 1944401 its reverse (1044491), we get a palindrome (2988892).

The spelling of 1944401 in words is "one million, nine hundred forty-four thousand, four hundred one".