1944407 has 4 divisors (see below), whose sum is σ = 1973496. Its totient is φ = 1915320.

The previous prime is 1944401. The next prime is 1944457. The reversal of 1944407 is 7044491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7044491 = 227 ⋅31033.

It is a cyclic number.

It is not a de Polignac number, because 1944407 - 2¹⁴ = 1928023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1944407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14444 + ... + 14577.

It is an arithmetic number, because the mean of its divisors is an integer number (493374).

2^1944407 is an apocalyptic number.

1944407 is a deficient number, since it is larger than the sum of its proper divisors (29089).

1944407 is an equidigital number, since it uses as much as digits as its factorization.

1944407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29088.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1944407 is about 1394.4199510908. The cubic root of 1944407 is about 124.8137385914.

Adding to 1944407 its reverse (7044491), we get a palindrome (8988898).

The spelling of 1944407 in words is "one million, nine hundred forty-four thousand, four hundred seven".