1444405442 has 8 divisors (see below), whose sum is σ = 2294055756. Its totient is φ = 679720192.

The previous prime is 1444405439. The next prime is 1444405471. The reversal of 1444405442 is 2445044441.

It can be written as a sum of positive squares in 2 ways, for example, as 1385253961 + 59151481 = 37219^2 + 7691^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1444405399 and 1444405408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21241223 + ... + 21241290.

Almost surely, 2^1444405442 is an apocalyptic number.

1444405442 is a deficient number, since it is larger than the sum of its proper divisors (849650314).

1444405442 is a wasteful number, since it uses less digits than its factorization.

1444405442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42482532.

The product of its (nonzero) digits is 40960, while the sum is 32.

The square root of 1444405442 is about 38005.3343887407. The cubic root of 1444405442 is about 1130.3936399745.

Adding to 1444405442 its reverse (2445044441), we get a palindrome (3889449883).

The spelling of 1444405442 in words is "one billion, four hundred forty-four million, four hundred five thousand, four hundred forty-two".