1944487 has 4 divisors (see below), whose sum is σ = 1948536. Its totient is φ = 1940440.

The previous prime is 1944473. The next prime is 1944499. The reversal of 1944487 is 7844491.

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-1944487 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944457) 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, 1189 + ... + 2302.

It is an arithmetic number, because the mean of its divisors is an integer number (487134).

2^1944487 is an apocalyptic number.

1944487 is a deficient number, since it is larger than the sum of its proper divisors (4049).

1944487 is an equidigital number, since it uses as much as digits as its factorization.

1944487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4048.

The product of its digits is 32256, while the sum is 37.

The square root of 1944487 is about 1394.4486365586. The cubic root of 1944487 is about 124.8154503321.

The spelling of 1944487 in words is "one million, nine hundred forty-four thousand, four hundred eighty-seven".