1444443420 has 192 divisors, whose sum is σ = 4945038336. Its totient is φ = 307507200.

The previous prime is 1444443373. The next prime is 1444443431. The reversal of 1444443420 is 243444441.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 720139 + ... + 722141.

It is an arithmetic number, because the mean of its divisors is an integer number (25755408).

Almost surely, 2^1444443420 is an apocalyptic number.

1444443420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1444443420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2472519168).

1444443420 is an abundant number, since it is smaller than the sum of its proper divisors (3500594916).

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

1444443420 is a wasteful number, since it uses less digits than its factorization.

1444443420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140 (or 2138 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

The square root of 1444443420 is about 38005.8340258440. The cubic root of 1444443420 is about 1130.4035470989.

Adding to 1444443420 its reverse (243444441), we get a palindrome (1687887861).

The spelling of 1444443420 in words is "one billion, four hundred forty-four million, four hundred forty-three thousand, four hundred twenty".