1444444000 has 48 divisors (see below), whose sum is σ = 3549008736. Its totient is φ = 577776000.

The previous prime is 1444443983. The next prime is 1444444009. The reversal of 1444444000 is 4444441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444444009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176556 + ... + 184555.

It is an arithmetic number, because the mean of its divisors is an integer number (73937682).

Almost surely, 2^1444444000 is an apocalyptic number.

1444444000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444444000 is an abundant number, since it is smaller than the sum of its proper divisors (2104564736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1444444000 is an equidigital number, since it uses as much as digits as its factorization.

1444444000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361136 (or 361118 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 1444444000 is about 38005.8416562507. The cubic root of 1444444000 is about 1130.4036983992.

Adding to 1444444000 its reverse (4444441), we get a palindrome (1448888441).

The spelling of 1444444000 in words is "one billion, four hundred forty-four million, four hundred forty-four thousand".