1444568890 has 8 divisors (see below), whose sum is σ = 2600224020. Its totient is φ = 577827552.

The previous prime is 1444568887. The next prime is 1444568929. The reversal of 1444568890 is 988654441.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1421365401 + 23203489 = 37701^2 + 4817^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72228435 + ... + 72228454.

Almost surely, 2^1444568890 is an apocalyptic number.

1444568890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1444568890 is a deficient number, since it is larger than the sum of its proper divisors (1155655130).

1444568890 is a wasteful number, since it uses less digits than its factorization.

1444568890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144456896.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The square root of 1444568890 is about 38007.4846576303. The cubic root of 1444568890 is about 1130.4362765744.

The spelling of 1444568890 in words is "one billion, four hundred forty-four million, five hundred sixty-eight thousand, eight hundred ninety".