1444991026 has 8 divisors (see below), whose sum is σ = 2167657884. Its totient is φ = 722438400.

The previous prime is 1444990969. The next prime is 1444991029. The reversal of 1444991026 is 6201994441.

It can be written as a sum of positive squares in 2 ways, for example, as 1357848801 + 87142225 = 36849^2 + 9335^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1444991026.

It is not an unprimeable number, because it can be changed into a prime (1444991029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18726 + ... + 56926.

Almost surely, 2^1444991026 is an apocalyptic number.

1444991026 is a deficient number, since it is larger than the sum of its proper divisors (722666858).

1444991026 is a wasteful number, since it uses less digits than its factorization.

1444991026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57116.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1444991026 is about 38013.0375792306. The cubic root of 1444991026 is about 1130.5463789439.

The spelling of 1444991026 in words is "one billion, four hundred forty-four million, nine hundred ninety-one thousand, twenty-six".